[jtechau]

I think a couple of you are missing the point on the challenge of building a robot with a smaller frame size. For one thing, many teams practice designing and building the "standard" size frame in the off season (or, even though it's against the rules, intentionally or unintentionally copy a reference design they built in the off season or past years), and so they'll have to re-think the design if a new size is announced.

But more importantly, you're thinking only of the robot base and drive train. For example, the control system is not shrinking, and will have to fit within a smaller frame. Same goes for motors, gearboxes, compressors, and anything else you've had to squeeze into your available space. If the game calls for a complex mechanism internal to the robot, a smaller frame would definitely by a challenge.