[Tom I]

I can say that filming would be very helpful. Unfortunately my team did not always use this technique, but I know from football, it is helpful. In a game, I wouldn't remember half the plays we went through, but by using film we could go over everything with visual proof and reminders. Driving a FIRST robot is just as stressful, if not more so, than playing football (woot). Theres so much going on, driver's can never remember everything, which is understandable.
However, Filming will only be benificial if you capitalize on it. just filming will do nothing, you must have a review team to go over the good, bad, and ugly, and figure out what worked and what didn't. These people would be responsible for presenting to the drivers various strategies. Since only one person is required to film (I'd recomend a tripod), the others on this team can try a method my team used. We had scouts in the stands with scouting sheets, gathering data on each robot on the field (how much they scored, how much they were scored upon, special game peices, ect). We used one person per robot, so 6 scouts. We did this for every round; a daunting prospect, but very helpful. The benifit of these was we could bring up our next round apponents before a match and know what we were going up agains, and how to counter strenghts and capitalize on weaknesses. I think this combined with film, as well as USING the two to strategize with drivers, would be invaluable.
After the robot is built, it's performance is all based on skill of drivers and strength of strategy. (With the most important aspect, of course, being Gracious Professionalism!!!)