[KenWittlief]

well, no... actually motors with super magnets would be lighter and smaller for the same amount of torque or HP output

and a motor with a smaller armature will have less internal (rotational) inertia, which means it will accelerate faster and have a better response curve, allowing it to be used with tighter PID control loops.

Using a better motor gives you several benefits => advantages. Only problem so far is that FIRST understands this completely, and they have kept motor modification and substition off the table of options.

But that doesnt mean we cant talk about it :^)

BTW, controlling a motors field strength, buy using field coils instead of permanant magnets is a better way to control the motors speed and torque. With a strong field the motor will run slow and have lots of torque. With a weak field the motor will run faster, but have less torque.