I'll agree that Vadderung seems to be a lesser form of Odin.  But I'm not sure they're so easily divided.  We saw Vadderung at the seat of his power, and Vadderung's power is directly tied to Odin.  He has Odin's ravens, he has his troops, he uses Odin's eye as his symbol.  It seems more like Odin became Vadderung as his power waned.  He's not what he once was.  He's probably still packing more than what we've seen, but as we've seen him take the field with Gungnir, I think he's still definitely what's left of Odin.

Agreed. There is woj that mab is too smart to attempt to abuse the relationship.

  Or it has and that will be just one more surprise that gets sprung on us in the future..

2010 Dragon*Con @ ~1:45
When Eb does his "Laying of the Cattle move" at the major battle near the end of Changes, is that a power of the blackstaff?
The Blackstaff is what keeps that kind of thing from driving him insane and turning him into a giggling villain.  Yah you don't go messing with black magic in the Dresden Files, it's very very bad for you.  At the same time, Magic is something that happens because you truly believe that when you set out to do it that you should be able to do that sort of thing.  That says a few things about Eb that really Harry hasn't run into in any other forum other than right there.  Yah Poor guy, He's got a tough job. 

So if this is true, in spite of all the protections from using the Black Staff,  Eb is running a risk to himself..

This raises another question.

Sure, a wizard dropping a building with the express purpose to kill someone is bad (Cosmically tainting), but what if a wizard is hired to demolish an empty building. Without the knowledge of the wizard, someone else uses that opportunity to kill their enemy by placing their victim inside that building. What kind of karmic balanced are to be levied in that case?

A case similar to this happened in GP. When Harry unleash his great fire spell at Bianca's party, he is targeting vampires. Unfortunately, several human were caught in the crossfire. So far, we did not see any taint happened on Harry for that act. I mean, Harry seems to remain sane enough after that.

This challenges the assumption that only consequences matters. I think intentions matters as well and both intentions and consequences both carries their own weight and functions independantly from each other. You intends bad but your act did no lasting harm, you got a little tainted. You don't intend harm but the act cause major harm, you got tainted. You intends harm and you succeeded, express way to worlockdom.

but from this you consider the survival of homo sapiens to be more important then the survival of earth itself?

that's  a very... human... point of view.

I wonder what type of Fae the Nuckelavee is a Sidhe of (I'm assuming it's a Sidhe because all the extremely powerfull Fae we've been shown are Sidhe). Is it even a Fae? It doesn't seem to share any traits in common with the Fae as described in the Dresdenverse, maybe in-universe people were just confused?