I think all those new addons that are now build for classic world of warcraft, the vanilla experience is gonna be different... in a good way ... and a bad way. For example I heared the recount for classic is already ready, which means we can analize the encounters better, however there is addon that shows you all the quests, where to go and what to do and this is potencially bad for the game. I remmember times where I had to go to thottbot or wowhead to check where my quest is , or to ask another player to help me out with the quest. I think this addond will kill those interractions with other players.
Anyway guys let me know which addons you gonna use for classic wow
Regards