Since I have been attending FIRST competitions (2006), all of the fields have been symmetrical. Have there ever been playing fields that have been asymmetric? I think that it would create a very interesting dynamic to the game to have a field that offers different options on different sides.
Just to provide an example, it is very popular in paintball to have a "snake side" and a "Dorito side" corresponding to the shapes of the barriers on each side. In high level games a team will often prioritize working the snake or the Doritos. Since paintball can also be played 3v3, I think that there could be a direct correlation to a FIRST game.
It would be interesting to see teams have very specialized roles. It would create the teamwork aspect that was the signature focus of Aerial Assist, but it would also allow teams to be successful on their own like in Ultimate Ascent or Rebound Rumble.
Any thoughts about this?
Short answer, the GDC has ruled it legal explicitly through Q&A, implicitly through Q&A, and implicitly through the Manual. - EricH [more] 
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