1: lvl-100 will be the max of wow, no more lvling etc. Not saying it is but for the sake of the post.
2: The talent system stays generally the same as in reach lvl-100 pick one of three talent/spells
3: Blizz basically says, "Well this is it guys, wow's basically so lets screw balance and just give all classes the most crazy talents for reaching the end."
So what would you guys like as your FINAL raid boss caliber powers?