Wow, I hadn't heard about the idea to expand GMRS to 30-50 mhz, but that might be good for like, out in the country, hunters, hikers, campers, when you need a longer range signal that can get around the hills.
I'd hope they wouldn't take over the Part-15 unlicensed band, I still have devices that use 49-50 mhz in there.
It could be another low power broadcast band, but I'd think skip would hammer it in the summer.