So, it looks like we know the Rahshid's age. 706 give or take a couple years. Firstly, I'm assuming he is also a starborn, so he is Harry's age plus some multiple of 666 years. Call Harry's bday around 1975, the previous starborns were round about CE 1330, CE 670, CE 1. Even wizards usually don't live 1000+ years so 1330 is most likely.

But if something hinky went on with time/life, I still think 670 is the earliest possible. Rashid seems to be an Islamic name, and assuming it is his original name that would put him sometime after 630-ish. Plus if you further back you run into problems like being pre-swords of the cross, possibly knowing the Merlin and the original Warden. Just starts feeling wrong.

Also, it's interesting to know more about Listens-to-Winds teacher.

I'm away from book. Does Ghost Story have the exact wording of Harry's bargain with Leah? Cause WAG.

Assume the bargain was Leah will help Harry defeat or kill DuMorne, in exchange for three favors. Mab has collected either one or two I think?  Now, with the DuMorne/Kemler connection Dumorne can be "dead dead" and still come back. So, DuMorne shows himself and Harry recognizes him. What happens to the bargain? The first clause is now untrue, so Harry has done favors without compensation, which leaves a pretty potent unbalance.

I'm assuming IIRC the bit from Cold Days that went something like: Harry is fine. Harry says he will break part of the Winter Knight Oath. The Knightly power disappears until he changes his mind. So the Leah/Harry oath will be "balanced" until Harry, Mab, or Leah find out DuMorne is still around. Now in the Leah/Harry oath, one favor has been equivalent to Harry using all his power to do whatever. I'm thinking this means...

Harry and the Alphas have tied up the villain. Harry reaches out and pulls off the mask...
"The ghoul! It's mister DuMorne"
"And I would have gotten away with it too if it hadn't been for you mangy wolves and that wizard."
Elsewhere, Mab is in the middle of a fight. Suddenly, two Harry's worth of power are drained from her and passed to Harry.
Mab has no power left and loses the fight. Oops. Nice job breaking it hero.

Knowing that one warden became many, and their original job, to me at least seems the same, to me their is little difference between what a warlock becomes and the things in the well, heck for all we know the things in the well find resonance with the actions of those warlocks and rach out through said connection to influence and try to control or meld with(which would transfer consiuosness not necassarly raw power, though an increased flow seems likely) until they have replaced enough of them that they genuinely believe themselves to be said creature, at which point, perhaps they are?
What I wonder at from that one warden, is the precise significance of the grey cloak, as it has been pointed out as a specific in woj. I have more than a few ideas of course, but would like some neutral feedback.

"As bad as the monsters are, humans can do worse", or something to that effect.  The basic difference between warlock & THINGS is scale. Is argle-bargle-monster really that different from crazed cursing Korean kid?  My theory is all this goes back to humans becoming dominant and various past flavors of monster-hunting groups.

Old days: The Warden has to go out and take down big bad monsters. The monsters are too something to destroy, hence DR. And comparatively few of them - unless anyone has better numbers, I'm assuming a few thousand, caught and penned over time.
New days: Damaged humans are the monsters. A lot more of them, but much less powerful. So you need a group of less-badass wardens to take over, and you don't have to bother with prison anymore.

Allow maybe half a millenium, and most people won't remember DR.

Associations of gray: Goodman Gray, I think "He Who Dances around Mac's place" had a wrap of strips of gray cloth, the gray council, halfway on the spectrum of White Council, Gray Cloak, and Black Staff.  Maaaybe the blood repelling property is relevant - the Warden has more resistance to prisoners' weird brain-hurting powers, and similar?

So, spire Albion is roughly a soup can 2 miles tall and 2 miles wide. But, is it a soup can on a stick (all habbles are well above ground level), just a soup can on ground, or is part of the spire underground?

Having underground habbles might explain where some of the raw materials come from. On the other hand, was it just surface critters that are dangerous, or is/was there something bad in the atmosphere when the spires were built (meaning you need the spire to start above the bad stuff, but maybe slowly fixed via terraforming)?  If you continue the ramp and the center pillar, you could have a ground entrance well below the bottom habble.

I think what I'm most wondering about is atmospheric pressure. If the spire sat on the ground, then the bottom is at sea level while the top is 10,000 feet - aka passing out without oxygen tank level.  So are we talking a planet with a lot more oxygen, or something causing the pressure to be the same up to airship heights (super ginormous planet?), or is it instead of 0 to 10,000 feet  it is actually 25k to 35k. Then you definitely need human tweaking to let them survive at all, but it would be a much smaller relative difference.

I guess if half of it is underground, you would have from -5000 feet (not as deep as the TauTona mine) to +5000 (Denver, so pretty livable)

I'd really suggest a rethink, cause you're missing out on an amazing set of GM tools. Remember that Jim wrote them in the first place because of the stories he wanted to tell.

First off, there are the laws to prevent spells that shut down stories.  Mind reading and looking into the past kill almost any story that involves secrets or 'who did what to whom'. So, the third, 4th and 6th laws.  Also note that there are workarounds Harry uses, but they all complicate/make interesting the story.  Soulgaze & using the Sight can give you indirect evidence about whether a person did or could have done something, but it doesn't give any solid proof. Plus, using either puts you at risk of 'see Cthulhu in their head, go temporarily insane' syndrome.

Then you have the laws that influence how the story will go, and what kinds of things the heroes will do.  1st law isn't just 'no kill', it is 'no kill with magic'. That means you will see wizards fighting with revolvers, swords, flaming ghostly chains, etc instead of tossing fireballs. Also, it is don't kill souls/free willed folks.  So humans are definitely out, animals & a lot of monsters are fine, and then you have things like WC vampires that generate should I /shouldn't I stories. 
If you WANT fireballs, you could drop this law entirely.  BUT, say you want heroes to toast badguys, but don't want the hero toasting the town guard.  Then, come up with a fancy version of 'PC races are no-nos, but Orks are a soulless hivemind created by Orcus, so they are fair game." Maybe a deity filled in the details.

Other laws and story: 2. Don't turn your enemies into cockroaches and step on them. 4, 5, and 7. Good guys don't use Charm Person, Animate Dead, or Speak with Illithid.  If you want cockroaches, charmed minions, zombie mine detectors, etc, just change the law.

Another benefit. Bad guys can break all these rules, so if you want a bad guy necromancer it's fine, he'll just be crazy and maniacal laughter.

And finally, they create stories abut Heroes skirting the edge, or the consequences of breaking the laws.  Harry: angst abut breaking 1st law, loophole finding to animate Sue, Molly and her various mind magics.

TLDR, tweaking the laws can be very good for your game. Tossing might be extreme.

Earth Magic?  Or Earth Evocation?

Good point. A couple ideas from other games: grasping hands coming out of the earth, making a chunk of rock explode (or just throwing a big rock), temporary stone wall, summon your lightsaber/warden sword to your hand. Ride a chunk of earth around. Passwall. Sense anything touching the floor. Guess someone's weight. Count the number of pennies in the jar.

Given that ley lines are a thing, I think you could block or counterspell by 'grounding' the magic energy. Also seems to be the element for manipulating most solid objects, so reinforcing (t-shirt into armor) & destroying armor would be easy.  Telekinesis. "Enhancing" black powder to make a better bomb, maybe, or would that be over the line?  Dig  a grave in front of someone as a flashy threat.

Let's say you are a monster (red or white court vamp for example) that can use magic. Are the laws of magic any different for you?

For example:

• You are a vamp wizard using your vampire powers to kill someone. Break any laws?  What about the same vamp using wizardry to kill someone
• You've made a thrall with your natural powers. Now you use wizardry to do some specific tinkering. Do they have enough mind left to count for the mental law?
• Can you use wizardry to feed? Say using magic to induce the appropriate emotion, or just to rip out psychic energy for a white court.  Does using magic affect your Hunger?

I have the impression that magic is magic and vamp power are vamp powers, magic can break laws no matter who you are, natural powers never can. Hence why red courts are so crazy. But then again, magic-using reds don't seem significantly crazier than non-magic reds.  Ditto Sidhe