I say that a dream team would be two robots that have the ability to stack with a great defense robot.
In our regional in Arizona we finished third overall and eliminated the alliance made up of the 1st and 2nd place ranked teams in the first round of the finals by playing defense. Our little blue bot has a two speed transmission (fast and faster), it is two ounces less than the maximum allowed weight, our frame was made of fiber glass, it drives with four CIM motors running four 10 inch pneumatic tires, two omni wheels (All wheel drive) and a brake that totally stops the robot from being pushed around but it is small enough to fit trough the field tetras

. We had no problem removing tetras from underneath them by pushing them out.
We didn't have problems maneuvering or pushing other robots around. We built the robot with stability in mind and after the competition there wasn't any significant structural damage on the robot. It even kept most of its paint on.
It has an arm that can place tetras underneath the field tetras or pull them out but the pwm cable kept coming off during matches.