On the positive-side, I haven't paid any attention to Diablo IV because I'm not really into anything Blizzard, and I really dig the back to Diablo I/II dark & gothic & minimal color palette art style. Sure looks like old-school Diablo but in 3d.
Also the whole open world MMO style map fights sounds...cool? Basically seems like a Diablo loot MMO which I could go for. Might be the first Blizzard game I play since D3.