I personally think that it should stay as it is. The increase is not enough to make a build easier as you are still stuck with pretty much the same classes/sizes of motors and batteries. The way I see it is that both Beetles and Ants are of such a small size that powerful motors with strong gearbox's are expensive as they are right in the scale of miniature models and vehicles which are expensive hobbies.

I would like to see a class for 15 Lbs machines, or half a featherweight. I think the Germans have that weight class and so do the aussies. They are heavy enough to use featherweight parts like ESC's and motors and can be paired up to fight against feathers and it would give another class that could be run in the Robochallenge arena which doesn't get out much.