I think it is pretty clear all minibots will be 12 x 12 x 12 max. but how will your team tell the minibot to climb? I don't see any restrictions aside from the fact that the minibot can't use radio at any time. So, do you use pole contact to make it go or do you use IR from the Host bot to propel it up the pole? It seems like you might want a standard method for triggering so you could use anyones minibot. Perhaps a Lego bump switch?
How do you align the minibot to the pole? What if the minbot pole climbing mechanism in not in the center of the minibot?
How will you keep your minibot inside the Hostbot while driving around and during collisions? Not quite a standardization topic.