I appreciate all of the experienced insight here. I am learning some of the various issues involved.

After reading all of this, it seems to me that the thing to do, is to weigh all the planes ready to fly. That means with full tanks, or all the electrons in the batteries. They can keep the current weight limit, or if they choose increase it by 8 ounces, or whatever size tank is usually run for a glow sequence. To me, that would seem to put everything on more equal ground.