Well, the visual of Yazoo nakey in an outdoor, bubbling hot spring just made my freakin' day. *high-fives you*
On a more serious note, I really like your Kadaj. I've read a lot of fic where he's made to seem evil in a very calm and calculating way. I think your emotionally charged, rather whacked-in-the-head Kadaj is a much more realistic portrayal.
I also enjoy the concept of the parts of the whole being at odds with each other, the classic Greek tragedy internal struggle for dominance. I honestly think, if I could take the time to do a more thorough analysis, that Yazoo was truly the remnant-in-charge. Kadaj was just...louder.