Sauron is already free because of overuse of balefire in the books has meant that he can simply remove his power from the pattern and reform (it makes sense, that's the scary part). Do you really want to see what else can go wrong?
I'll pay the whole Demon Prince thing, for one thing because Druss is explicately much stronger dead then alive, and it probably fits (never read chronicles, so I don't know for sure). And besides, Rand needs a level appropriate challenge.
Of course, those images don't actually mean much, awesome as they are. It's warhammer. Everyone looks awesome. I mean, check out Nagash:
Spoiler
See what I mean?