Epicly awesome, but it can get really annoying and really hard. Especially when you get the the last part of it :-o .
It is epicly awesome, as master101902 said. I havent gotton to the last part, stuck on one part, but it really isnt that hard for wizards our level. Its a little rough, but never hard.
Its very hard. The battles get pretty out of hand. But for me, It is awesome!! Challenging battle, epic missions, awesome gear!!!! I mean, its like heaven for grandmasters! :D
It's only in the beginning that you get a little shock that the mobs and bosses can actually damage you, unlike the old world.
It takes a couple of days to get to lvl 60 or so.
Me and the GF haven't died yet and there has been no encounter in CL that we haven't been able to duo. Even the final bosses when it feels like you have them on farm (after the first time you beat them) are rather predicable in what tactic to use.