i haven't had a chance to play the open beta more than a few hours yet, but it's a seriously great game.

the passive system is really great if you're into a challenging aspect in your rpg style games, and by that i mean, any good end-game build is going to struggle a lot in the mid-levels, and any build that excels in the early-mid game are sub-par as end-game builds.

the item system is also really intuitive, if nothing else it's worth trying, especially because it's free.