[lexxasaurus]

First thing I thought was fast, I think speed will be fairly important in this game. The faster you complete the objective the more you get to block the other alliance. My next thought is strength; I feel having a stronger drive train will give you an edge in blocking... then there is the being able to move any direction giving you an advantage in scoring because of maneuverability.
Drive train this year seems really dependent on what you team wants to do, not the field elements.