That's a reasonable proposal. I will suggest that In addition to requiring high visibility paint and/or markings you could also suggest requiring that UAV's meet the FAR requirements for anti-collision lighting. And require that UAV used for commercial purposes be registered with the FAA and marked with the name of the manufacturer, a serial number, date of manufacture, name and address of owner, and if different, name and address of operator. And require that when in flight that right-of-way rule that applies to UAV's is that they give way to all other aircraft.

For folks who want to keep track of FAA UAV work, or even submit suggestions, take a look at http://www.faa.gov/about/initiatives/uas/ Interesting info there.

I will also note that some of our elected representatives have expressed interest and opinions on the topic of UAV's. There was a recent high profile Senate filibuster for instance. Sending suggestions to those folks will accomplish a lot more than simply venting on an internet forum. When a Senator or Congressman sends a formal inquiry to a federal agency, they must provide a reply.

Best of luck,

Wes
N78PS