GMRS may become like 11M CB? Well... The worst harm that I could see there is repeater disruptions from douchebags. However, due to the nature of 462 / 467MHz FREQ's, I doubt that you're going to hear 1kW UHF linears burning up Tropo Propagation from Needle Benders & Mudducks. (Fo' 10, fo' 10!!!)