Of course she is. But the question is about what she spends her time doing - and the answer is countering Winter's aggressions to the mortals. She doesn't have to counter everything Winter does, as Griffyn says. Summer only has to counter the stuff that threatens mortals.

I'm only partially disagreeing, but I see Titania doing the same kinds of deals with all the other powers as well.  Mab does these deals to increase her power, which (possibly incidentally) gives her more ability to defend the gates.  Titania will be doing the same sorts of machinations to also increase her power, which (also possibly incidentally) helps her keep the balance against Mab.

Let me caveat...  it has been a while since I read the book, so I could be fuzzy.

I don't remember us being told specifically that the banner was something that is necessarily related to the Winter Knight or Mab.  I remember Mab saying that no Winter Knight has been able to do this since that one famous guy.   She didn't say that the other guy did it because he was Winter Knight, just that he was the last guy who did it that was Winter Knight.  One could take that to mean that it is some latent Winter Knight thing that only a super small percentage of them can do.  But in the light that Marcone also did this thing, it is easy to also interpret this as Mab just saying that this power to grab this mystical Leadership banner is rare, and the last Winter Knight to pull it off was that Tam guy.

So all I'm saying is that, unless I am forgetting some detail, we don't have a really detailed explanation of exactly what the "Banner" thing entails, or what exactly causes it.  For all we know, a person could do this without any formal position (like Baron of Chicago, or Winter Knight), perhaps all it requires is a large scale confluence of Magical Forces and a person who can call and inspire leadership.  This would mean it is more likely to happen if you have a title and position, but not necessary.

Mind you, I'm not claiming this is the case, just that we don't have enough info to say exactly either way.

I would like to hear from Jim if there is any inter-habble transportation besides Airships.  Any stairs or elevator style lifts between floors. 

One could imagine a vertical train where the cars would stack with the floors of the cars being vertically the same distance as between habble floors.  At the top, the car flips around and becomes the car going down in a second elevator shaft (both shafts could be outside the habble proper).  If you need to go up, you get in one side; down in the other.  It could stop for 1 minute at each habble.  Would take maybe 6 hours to get from bottom to top.  Maybe even faster it you stopped like an airport train.  Like 10 seconds at each stop for foot traffic.  You could have a second set of elevators that stop for longer to load cargo for a slow, but steady flow of cargo.

I think Jim may have lifted the ship class naming conventions off of David Weber's Honor Harrington series (a sci-fi take on Horatio Hornblower as opposed to Jim's steam punk take).

In increasing order in size in that universe with a line break

Destroyer
Light Cruiser
Heavy Cruiser
Battlecruiser
----
Battleship
Dreadnought
Superdreadnought

You are not wrong with your description, and I enjoyed the Honor Harrington series, but this naming scheme was not developed by David Weber, it comes from British Royal Navy classification, and is used in not only the Honor Harrington series, but also in almost all military SciFi series.  Here is a link to a site that gives a lot of info on the classifications.
http://criticalshit.org/2015/05/15/on-the-taxonomy-of-spaceships/

It doesn't specifically say what it's made out of. Just that the second layer was filled with "Masonry and wooden construction"

But I wouldn't think a wooden floor 2 miles across would be stable enough to hold buildings. The would would start rotting and stuff and constantly have to be replaced, and the supports would have to be huge. I'm assuming it's made out of some kind of stone

There is no stone material on Earth that could make an unsupported floor 2 miles across either.  Stone/concrete has great compressive strength, but very low shear strength and tensile strength.  It is also very heavy.  You would have to have arches and lots of columns along with steel beams and supports.  Wood is actually much better at tensile strength than stone or masonry.

That said, wood also couldn't support a 2 mile floor without lots of supports, and concrete's great compressive strength would be more suited to having things piled on top of it (like large buildings).

In reality, it's probably best not to think about the details of this, because the engineering details are probably impossible to work out as Jim writes about it.  At least not without inventing some super-material like spirestone, or some other "magical" means.  Maybe they were able to put lift crystals in the floor?

Changes page 161-162 for whole convo. i am just using the important piece.
Harry,"How does it work?"
Vadderung,"it tears out the heart. rips it to bits on the way out, too. sound familiar?"
Harry," hell's bells." it had been years since i had even thought about Victor Sells or his victims.
Vaderung, "it's all connected, Dresden. the whole game. and you're now beginning to learn who the players are. the sorcerer who used the spell in Chicago before didn't have strength enough to make it spread past the initial target. the RC does.no one has used Power on that scale in more than a millennium."

Yes, I put that in my edit above as well, but it doesn't specifically say that it is the same spell, just that they are similar, and that Sells' version didn't have enough power to go bloodline.  One could infer that it was the same spell, but it doesn't seem definitive.  You can feel from the whole conversation that Vadderung *can't* fill Harry in on all the details.  It seems to me that Vadderung is using this to point something out to Harry so he can find a method to defeat it, but he can't go into more specifics.

so how did he come up with the formula for 3eye? that is a far advanced potion. how did he get the bloodline curse? how did he get an extensive library as they would be expensive? and he was never said to have one just a few books. no he isn't self taught someone taught him specific things and set him on his path. someone had wanted Sells to do specific things, he was a tool. it is obvious.

Where do we have evidence that 3eye is a "far advanced" potion?  He did not have the "Bloodline Curse", though the curse he used did have a similar effect, it did not target a bloodline.  He had a demon summoned, it is possible that the bound demon was compelled to tell him something about curses, or even potion making.  Or it could have been another demon that he summoned.  All of this is speculation, of course.

Edit:
I looked it up, and from Changes Chapter 21...
  That could mean that Sells Spell is the exact same spell as the Bloodline Curse and Sells just needed more power to go bloodline, but it doesn't mean that that the spell would not need to be changed as well as need more power to go bloodline.  It's hard to tell exactly what's going on, since we know Harry (and therefore us) have only a small portion of the picture.

Nice.  dig up a year old thread to tell me I'm an idiot.   I'm sure you could have found something much more recent for that. 

That's not quite true.

Taken most literally, diceless just means that it doesn't involve dice. Diceless games may or may not involve other randomizers, and they generally involve some sort of numbers. Everway, for example, involves no dice, but it does use a tarot-like deck, and characters have numeric traits.

Sometimes people say diceless when they mean randomless. Randomless games involve no chance, but they often involve numbers and resource management. Nobilis has four numerical traits and each has a pool of miracle points. You don't succeed or fail based on chance, but on how willing you are to spend your resources, and how clever you are in bringing any conflict into an area in which you dominate.

What you've described above I would call freeform. The closest I can get from my game experience is Puppetland. Characters are defined by what they are (tall, strong, etc), what they can do (run very fast, climb moderately well, etc), and what they cannot do (fit through small spaces, shout loudly, etc). Players state their intention, and the GM tells them what happens.

A note on freeform RPGs: They often involve sharing narrative authority around the table to a degree not seen in "traditional" RPGs. I cannot recall the name of the game, but in one if your character is, for example, a knowledgeable biologist, you get the narrative authority to resolve any situation related to biological science information.