As much as I love Diablo 2, class and item balance in the game was fucking terrible. Let's not forget nobody plays the game to its full extent anymore and just rushes through difficulty modes so they can MF their way to 99. You didn't notice, or probably care, until Hell. But then again, if you use a MF char you're already complaining about something.
Lack of offline play for Diablo 3 is just fucking stupid. There's no way around it, it's fucking stupid. Why even bother saving the characters on the computer if you're forcing closed-battle.net.
I never cared for mods, but if offline-singleplayer isn't allowed there's no point for non-UI modding. Maybe after the game is released and the dust settles they'll release a SC2 style map editor for the game.
I'm pretty sure the lack of release date is cause of stupid-ass global-releasing. Did Korea stop crying yet so we can move past that road-bump?