Biggest surprise
Best Story
Most varied Gameplay
Best use of medium characteristics (best way to utilize the capabilities of storytelling, gameplay and characters that a game allows you to do. Like no forced cutscenes, no minute long cutscenes, maximum immersion)
Best AI (lets give credits to games with good AI)
Best balanced Multiplayer
Best developer support
Best new technology (how about giving focus to new technology that makes games better?)
Best value for money (lets see what game is best value for a change (pun intended))
Are you also going to do a "Worst" part of game awards? Like:
Worst title
Worst story
Worst cutscenes
Worst multiplayer
Worst AI
Worst remake
Worst moneygrab