I think people will be disappointed (or happy) if they think ARR will be raid raid raid at end-game, because even V1 wasn't that. Unless you can call content like primal fights, hamlet defence, FATE etc. raids but I wouldn't. The raid formula does seem to work best for content that isn't free for all or single battle though.
I don't know why people care so much about MMOs going out of their way to be different. MMOs have evolved over the years a lot more than another popular genre - the FPS. People still love those despite them being essentially the same as they were 20 years ago. Evolution has even killed some genres, platform games being a good example. There will also be many people who never played WoW or its clones who will be quite happy with what the game brings. It was never the content that put me off WoW.