Weapon perks could've been better for sure, but class-wise? Tons of cool and interesting options. I was a Voidwalker main (and mostly still am), and you could easily work out some cool combinations that just aren't possible now. Life Steal + Hunger + Bloom? Can't be done. Soul Rip + Annihilate + Bloom? Can't be done. The abilities that did carry over to D2 are mostly cut down too, presumably because people complained Voidwalkers were OP, but you really weren't. High damage potential, but absolutely glass cannons, and on a bad day, you'd die allllll the time.