This is coming from someone who's a huge Diablo II (and the ilk) fan... but I don't want this game to be any more fps than it already is. I think its perfect right there. Folks asking for more AI using complex tactics and degenerating the game into a cover firefight fest are missing the point of loot parade.
I want my lootwhore games (which this game is, you can deny it all you want, but its the key feature and main talking point even from the developers) to be setup so I can quickly run around and kill guys for more loot. I don't want to sit there and play a panzy game of cat an mouse for a minute at a time for each mob that threatens me only to see them drop a piece of crap item. I'd rather kill that one guy and ten of his closest friends in the same amount of time. Let my cup runneth over.
That brings me to my next point that I think its pretty silly that folks are getting worked up about there being no trade mechanic in the game. I can understand being a bit peeved about it simply for ease us use when you trade something to a friend. But, honestly, how often did you trade stuff in Diablo II? I don't know about you guys, but I played (and still play fairly often) co-op Diablo II and I don't honestly have time to sit there after every pack of monsters and discuss the drops and dole it out and trade and shit. This isn't WoW where we roll for loot and equally give stuff out. Get out there, kill shit constantly and pick up loot constantly. While you're sitting there hemming and hawing over some random medium quality gun I'll be halfway to the end of the game farming for legendary drops.