I'm more interested in npc behaviour changes, loot runs, skill and mechanics changes and the most important progression changes, because going to inferno is boring as hell currently.
Maybe it's just the video quality, but when the player is fighting the Mallet Lord Nephalem Rift boss at around 40 seconds in, the lighting seems incredibly dark. Almost feels darker than D2.
Looks like its shaping up to have some nice new features, but Blizzard...you guys are better than the standard "rising sound intensity" trailer music lol.