And influenced by whom?

You may end up right, but what I get to experience leads me to believe otherwise. There are too many things going on in places I can't talk about that will have tremendous impacts on what modelers do for fun if they win out. Commerce usually wins out with federal agencies and the greater the amount of "commerce" the greater the leverage. If "management" of the full scale flyers takes place in order to integrate uav's in U.S. airspace modelers will be viewed similar to a mosquito on an elephants butt. A nuisance for certain but easily swatted.

I'm reasonably certain that 25 kilos will be the upper limit of models permitted to be flown by "unlicensed" people. Over that will be regulated by federal authorities.