Wouldnt your idea be easily implemented by AMA declaring all members to follow their new Freq plan:
72mhz channels 29 & below for PFs
72mhz channels 30 & up for non PFs
digital conflict free freqs can be shared
Now, what is stopping AMA from just start doing what you want done,
so they can then later go to the FCC and show how easy it is to do.
Well, what is stopping AMA besides all the PF ama members that would hate this plan.
Not such a simple deal since you need to account for how many pilots are out there below 29? I'm just one guy with about 18 recievers that isn't all to hip on replacing everything because of a magic wand being waved.