Airspace classifications are public knowledge and part of your test for an airman's certificate. A little Google time should help you, if not we can do it here. No problem, happy to help.
I suspect controline will be excluded. I've dealt with the FAA most of my life and find them to be professional, rational, reasonable, and motivated by positive intent. Many are model flyers. There were a couple times when I was young when the FAA could have thrown the book at me if so inclined, but instead they just sat me down and "educated" me. I'm very grateful to them for that. They acted like professionals when I did not.
The intent of the law is most likely to protect the nation from those that would do harm ( either on purpose or by accident) or invade privacy. I'm pretty sure that if some kid buys a balsa glider they won't prosecute for unlicensed operation.
Technology has changed so rapidly that the rules probably did need looking at. Back in the 70's we didn't have the models we fly today.
Today we have 50 pound, turbine-powered models going two hundred miles an hour, 700 series helicopters which can chop down trees and 100cc 3D machines. And unfortunately, toy multirotors.
If so inclined, I could build a turbine powered, GPS guided, cruise missile in my basement. So can others. Given the current state of the world, I'm thinking that's not a good thing to be totally unregulated.
Regarding the altitude - the most likely scenario I see is the FAA approving waivers, which is a common, daily occurrence. Amateur rocketry guys routinely fly past Mach 1 to altitudes over 10,000 feet with craft that can weigh over 100 pounds. No big deal. You apply for the waiver, it goes in the NOTAMs and you're good. Some waivers are "standing" and can be activated via a phone call to ATC.(Or maybe even nowadays a text.)
I get the whole change is scary and gloom and doom, but my observations to date and first-hand experience with the FAA tells me this will be a whole lot of nothing - unless the AMA screws it up. Their position needs to be "How can we work together towards a common purpose?" rather than what I've seen to date.
The modern history of the FAA has been more about relaxing rules than anything else. They allow unlicensed operation of ultralights with a few very reasonable restrictions. They have "sport pilot" licenses now, understanding that not everyone needs to be trained and equipped to fly a Gulfstream into Teeterboro on Monday morning.
Nothing in my 40+ year career as aviator, experimental aircraft owner and aerospace engineer has led me to think that the FAA is an overbearing bureaucracy bent on stripping my world of my enjoyment. Nothing. Nada. Zip.
I also suspect that the biggest challenge to flying controline will remain the same as it has been for the last 50 years - finding a level spot with the grass short enough where the neighbors don't complain about the noise and kids don't ride bikes over your lines. I'm guessing that R/C fields will have something similar to aerobatic boxes, which will help, not hurt our operations by providing a safe airspace for us to operate in.
I'm willing to bet, however; that there will countless reductio ad absurdum arguments used to rail about the coming changes.
My two cents, and all opposing viewpoints are welcomed, respected and will be given thoughtful consideration.
Chuck