From what I had played on the beta months ago; it was okay. I like the talent trees of an RPG. Even if most of the options were pointless passives and there was typically only 1 good way to go for each class. But that's Blizzard's fault of design. Spent too many years balancing and breaking. So I can understand why they made it so simple now. I just don't like that you only get 1 "talent point" every like, 15 levels (?).
Other than that, I do like a lot of the stuff they're offering all the classes. Lots of fun new abilities.