I'm back and forth about the nerfs. In theory it's the right way to go, nerf everything that was too good, bring it in line with other skills that were overshadowed. Then when everything is in line they could just lower monster HP for example and it's much more balanced.
The current state was annoying as there's only one or two builds per class that work well, everything else was crap. Even worse for classes like Sorcerer with 4 must use defensive skills.
I'll play season 1 and just give it a go, if it sucks overall I can always wait for season 2. No big deal, after hitting level 70 on my Rogue I lost all motivation to play anyway as there is no good content at that point.