And around we go again!
If we waited for the technology to fill in the blank spaces all of this NASdebating would have resolved itself. We are still a long way to go until the majority of GA VFR are squitting 1090ES. If that day ever comes, I will not need the services of ATC out in the GAFA...remember! 1090ES doesn't need a ground station to be seen by other 1090ES Rx units unlike UAT. No need to yak, no need for boundaries...I can be warned of your presence and you of mine...Simples!
You really should have waited, Dick.