[davidfv]

I think the NO DEFENSE strategy will not work entirely. In order to get the coopertition bonus, you have to win or tie. Therefore, when it comes down to which alliance will get the bonus defense will come into play. Preventing a team access to the tower prior to the 20 seconds, stop the other team from scoring when the score is close, etc... The best outcome for all teams is a high score tie. A 8-8 game (no penalties) will give all teams 24 seeding points. A 8-7 game will give winners 22 points and losers 8. If you are maximizing the points for your own alliance, then WIN and keep the score close. Let your opponents score some points.

Coaches and Drivers will have to keep a close eye on the score, use minimum defense, but not NO defense.

The game changes in the elimination rounds.
Each team will want to do their best to show off their robot's capability during the qualification matches, because come the alliance selection, you are going to want to have the teams that handle the ball well and can score. Your third robot may be a pure defensive robot. The scout teams will be very important, the rankings will not give the best evidence of the "best" robots when picking your alliance.