I like the idea of a Buy it, Rent it, or Forget it rating scale for the CAG Reviews. Also maybe add another option that is something like "fanboys only" for a game that indicates that while it isn't a must buy for everyone, it could be for someone if the subject matter is up their alley. i.e. star wars, nintendo characters, etc.
I also wouldn't mind throwing on a dollar figure that indicates what the reviewer would purchase the game for at release. This wouldn't be used as a 'rating' merely a guideline as to what the game is actually worth. So a bad game might be a $15 or under game, while a great game is a $60 (full retail) game.