I wouldn't mind being an Anti-hero for once.
I've always thought of the Nerevarine as a sort of anti-hero; I mean, it's not like you're overthrowing a church and robbing an entire culture of their religion or anything. . .
Sure, you're saving the world in the process, but think about all the people who've devoted their lives to a faith which you completely undermine and topple. Heck, one or two of my characters even -killed- Vivec, their supposed god. I mean, yeah, one could make the argument that the Tribunal was oppressive or evil or whatever, but aside from Almalexia going nutty, I never really saw them as a destructive force in the world and there were alot of people who really loved their gods.
. . .and if you read the book "Infernal City"
Spoiler turns out the Nerevarines actions have some really harsh consequences for Morrowind; nothing you could really have forseen, but yeah.