Must say, battle.net is having a really bad time of it in the EU. Servers were down for hours on Sunday and I just got kicked off again mid-game and no-one can log in. The fans are throwing a fit.
(I see the auction house has been uplugged for now as well, though as I can;t even play right now that's trivial)
Anyway, I like the game, regardless of similar it is to what has come before. It's still an upgrade, and more than just a graphical one. Nothing fundamental has changed about the gameplay but that's really not that bad. Enough has changed for me to enjoy it separately from D2.
It's not game of the year but it's definitely worth my money, and the DRM thing is an irrelevance to me- games being online is going to be the increasing norm and that suits me just fine. I played Guild Wars that way for years.
They do need to sort bnet though.