It would be nice if the FAA would be honest about what it really wants to accomplish and I agree with much of the commits on this page. The best way to keep separation between whatever it is the FAA
wants to allow is keep all commercial traffic above 2,000' except emergency aircraft. Commercial Traffic that needs to fly low such as delivery craft and taking pics stay at or below 200' and stay
away from overflying know RC activity and or stay within a certain distance of the property they have business at. Next corridors should be established for low flying commercial to get from one
job to another and also for craft that fly over 2000' to get up and down.

Rc aircraft would be required to Know where all Commercial corridors are in their area are and if not at a fixed site would have check with the FAA any and every time they operate.
I think in most cases RC hobby craft could fly up to 1500' at fixed sites and some other places if not interfering with commercial taking off or landing.