I've read the OP and scanned the other posts, and the biggest issue I have...he is super lazy be is powerful because of extensive research?

Wut?

Being lazy and maintaining his hedonistic lifestyle without any more lofty goals makes far more sense for a gestalt sorcerer/favored soul.

In terms of accomplishments, this guys sounds a lot more like Karsus. What are he ultimate goals, his endgame? Does he want to gain immortality? Does he prefer pleasures of the flesh, the mind, or what? Why isn't he researching new spells, or working towards epic magic?

I just don't get this guy's motivations at all, and that, for me, destroys a villain. On that note...what exactly makes him a villain? Is he an undisputed emperor? Is he oppressive? Cruel? Does he lust for complete power over others (which doesn't fit with just wanting to maintain his luxurious lifestyle)?

Why is he a villain in the first place that the players need to defeat?