Perhaps I'm seeing the issue too literally, but UAVs are aircraft and are sharing the airspace with other aircraft; whether they are manned or not is irrelevant. The same rules apply to everyone in order to protect everyone!
I disagree that legislation needs to change to accommodate UAVs. The vast majority of aircraft are and will remain manned whilst also having the not so trifling matter of carrying lots of people. People's lives being priceless ahead of profit or convenience of UAV operation, legislation must reflect this.