Yes, i'm a vanilla-server hater. But now that it comes out i really hope for a huge success for the vanilla-servers. Not because of vanilla, it was one of the worst experiences i had, but because of future of the system.
I really want to see a working, flourishing purist vanilla-server for the beginning. And maybe then they expand the system:
Maybe later another server, a non-purist server without the "inconveniences" Ion spoke in the twitch-chat, with transmog and loot of multiple corpses. Not on the purist-server naturally, but on a decicated one! And maybe even latter one of future expansions; TBC, WotLK and 5.2 MoP. Or even a Progression-server, a lot of thinks might be possible if there is a working system, playing a older version of the game.
As much as i disliked Vanilla, i really hope for a success of the Vanilla-Servers, because they might expand them.