I would love it if they made death a real, permenant thing in ESO because it would make the world so immersive, it would force the newb trolls to mature and evreyone would think about the consequences of actions they make. No MMO I've ever heard of has had the guts to do this, and though it makes buisness sense to go easy on players when it comes to death, lets not forget that grandfather of all MMOs called DnD which was popular very much in part for perma-death. I expect to get a lot of flame for even putting forward such an unheard of and undone idea. But let's face it, the immortality of your character has always been a point of cheapening in games like this, we've just chosen not to see it. True Zenimax would never do it because they're trying to appeal to a broader fan base who want to play a game with no consequences, but I bellive if Zenimax brings somthing new to the plate they can dominate the MMO market.
Edited for typos.