It's really funny seeing what the prediction for the 2006 challenge was...
I think it would be really cool to have a robot relay running, where there are two picker-bots which collect gamepieces, and a designated holder-bot that keeps the pieces guarded inside itself. Then lay a couple 4" by 4" beams on the ground to act as obstacles. In the middle of the field have two ramps leading up to a raised platform. Not only would the ramps be covered with Teflon sheets, but for every ten seconds a robot remains on the platform and successfully fends off the other team, their alliance gets a 10 to 15 point bonus, and they keep getting the bonus as long as they remain on the ramp.
What came first: the student or the mentor?