Let's not get caught up on how difficult/expensive it is to fit bits of kit to what a/c. I understand that gliders have inherent problems. I understand that older a/c may not the freq spacing required. OK. What might come out of this review is that more airfields are taken out of class E airspace and given a higher category. The rules for Class E then do not change; but some Class E is upgraded.
10 years ago the LoCo's might have had 5-10 flights a day into a small airfield with only a VOR/NDB. Now there could be 30-40 per day and an ILS and the airspace is still the same. Is that a sound safe idea?
The man with the red flag disappeared as he was run over by a car faster than walking pace. The old codger couldn't afford the gym & personal trainer fees to learn to run faster and no young buck wanted the job; they wanted to drive the car.