http://www.defensetech.org/2011/09/23/the-cv-22s-800-mile-afghan-csar-mission/
This is the reality of what CSAR has been the last 20 years. The isolated person is either surrounded by hostile forces or they themselves are detained. That requires an aircraft big enough to carry an assault/ security team. That also requires an aircraft that are specifically designed to take punishment. In some cases due to terrain, a helicopter is required.
https://en.wikipedia.org/wiki/Death_of_Linda_Norgrove
PR has really been a dead mission during the GWOT and OIF / OEF anyway. We shipped AF CSAR assets to Iraq and Afghanistan and they sat around twiddling their thumbs. Just wasn’t the shootdowns like we had in Vietnam and most were immediate recoveries that didn’t require dedicated CSAR units. But, in 2005 AF CSAR (HH-60) adapted and supplemented the Army in the MEDEVAC role...essentially because they were bored.
So while I admire the AF thinking outside the box, I believe they’re trying to develop a system that doesn’t have a need. They seem to be looking for a weakness with the current system when none actually exists.