Give it some time if you're not sure. The DRM sucks, because any kind of DRM is bullshit and this is the worst kind. Auction house isn't up but thats something you don't even need to participate in to enjoy the game. I like the art direction, so far it's in line with what I think a diablo game with real 3d models should look like. The skills are fun, bashing monsters with them doesn't gets boring. It's fun times.
The customization doesn't seem like it will be too deep, but I think people overestimate how deep the customization in diablo 2 actually was. I checked the game's bandwidth consuption and its minimal compared to games like team fortress 2 and such, so even if you have a shitty connection (like mine is very often) it should work nicely, if everything is ok on Blizzard's side.
That said, if you want to boot up the game and start playing without issues, don't get the game right now, because you'll only be pissed half the time at errors, disconnects, lag and emergency server maintenances that lasts for hours. I think Blizzard will get their shit together by next week probably.
I just got to act 2 after the servers came back up. I'm having a blast. I just really wish they had released the game with an offline mode and ditched the goddamn real money auction house so i didn't have to have so many issues to play the damn single player campaign.