What? RIFT is exactly what WoW is, only with different graphics and apparently no support for phasing of content meaning the game world is even more static than in WoW. The only thing going for RIFT is the more interesting class/spec system, nothing else.
I'm personally eagerly waiting for Guild Wars 2; from everything I've seen and read the developers are atleast trying hard to rethink old conventions, ditching the whole tank-healer-dps system and whatnot.
Rift will be the most visually stunning MMO for some time. As for "phasing of content" I'm thinking you mean how you "change the world around you as you quest or interact with the environment but only for you not other players." To that, I say "meh" phasing is all that interesting in WoW. However, Rift is a very dynamic world with constantly changing zone events, and new world events and content patches coming on a frequent and regular basis. The world changes, it just for everyone. And the PvP is good too.
I like rift much more than I ever liked WoW. As for the "Trinity" I guess it's more than three? Healer, tank, DPS, and support. The whole rift spec/class system is awesome. Mages can't physical hit mobs evar, and warriors can't heal. Everything else is on the table.