A claw doesn't need to require precise positioning. You can make it wider so the driver only needs to drive into the game piece, and the game piece settles into a position where you can pick it up. (granted, this will probably be much harder this year than it was in 2007)
Whatever you do, make it idiot-proof. Not because your drivers are idiots, but because the fewer precision maneuvers they have to do, the more awesome driving (and scoring!) they have time to do.