I know it isn't going to happen, but I can tell you first hand* and also from watching
this video of the All Japan Robot Sumo tournament that a straight up robot pushing match can be a lot of fun. It does not have to be violent to be fun. I am not saying we should have a robot-cage-match with saws, etc.
I don't know how to put it into a FIRST enviroment, but there may be some elements of a robot sumo match that we could learn from.
I really recommend the video. Very cool.
Joe J.
*Robotic Amusment's first product is called Robo-Basho(TM) a 3 way robot king-of-the-hill game. It is really fun.