I have been proposing this to my team for 2 years now. I was proposing it as more of a driving simulator where you would take the view point of one of the drivers at the player station. Every robot would be intricately modeled and stated based on their actual results and abilities. In the matches the player could go through autonomous, drive the robot around and score. I was thinking of this as a potential MMO game with possible RPG qualities where players could actually make their own robots and compete as "rookies" in the competition. that was just my idea though.
One team I can't remember who off hand animated a field and their robot and made it so people could drive it around and shoot balls. Its the very beginning steps.
See it here