Nothing much left to discuss
I am avoiding spoilers, so I can't offer much insight whether the game will be good orbad. From what I've seen, apart from cartoony graphics, it looks decent enough. Blizzard usually doesn't change the winning formula, merely improves upon it. Starcraft2 wasn't that different compared to original and it was still a hit. I think, provided Blizzard didn't fuck up completely, D3 will be good and it will have to be because if it's not, I'll be playing new WOW expansion.