There is no reason that, aside from the LOS rule, that model flying should be any more restrictive than ultralights. They carry no passengers and are well below the size and weight of an ultralight. Speed is the only factor that can be beyond an ultralight and those could be handled as jets are today. Just as with FS you can have a safety pilot when not flying visual (meaning LOS) IE under the hood. As long as the safety pilot is capable and rated (if required) and has a set of controls (buddy box) it should be legal to fly FPV just as FS flys "under the hood." Just an FYI the Seattle incident would have been illegal if the pilot were, instead, in an ultralight filming the Space Needle. So basically class B and C airspace restriction would be the biggest change, but that is a far cry better than what they are proposing now. As far as commercial, just require formal training and licensing and specifc rules to allow specialized uses more suited to commercial enterprises. You want to be able to use it privately the same as the "pros" go through the training and licensing and have at it.