I see problems with all the types of team distinguishing methods so far. I am not going to restate what has been said, so instead of bashing their ideas why don't we try to help the GDC out a little bit. Seriously considering we participate in a robotics competition i think its fair to say that we are a smart group of people. We overcome much bigger problems than team identification in six weeks. Now we have several months to figure some kind of solution.
So stop complaining and come up with real solutions, and I am sure the GDC will gladly take our suggestions.
Personally i would like to see something more technological considering its a robotics competition, but at this point lets not hold back and come up with some killer Ideas FIRST Students are known for!
