I don't know about you Ben, but what I want from GTA4 is a good game. I want it to actually be fun to play, not just ultra violent and thats enough.
I don't want it to be the video game version of a Steven Segal film - loads of blood, explosions and people getting kicked in the eyes, but a crap script, bad acting and cheesy plots.
I want the car jackings, yes, I want the guns, the bombs, the po-lice chasing me, etc, etc, but I wont be sold just on that. The game underneath has to be fun to play.
Better be good anyway, its costing me 40 notes. And I rarely pre-order a game before I've read reviews.