You are making arguments off ECNL age groups which is the opposite of what I am personally concerned about from my experience. The problem starts a lot earlier than ECNL or ECRL and is more problematic at earlier ages. In my opinion, the biggest challenge above Pay to Play with US soccer is the lack of quality coaches. Even top clubs mentioned in this thread in my opinion have very few strong coaches. So when a club has at most 1 great coach per age group, the kids at U7-U11 suffering from RAE do not make the top teams at top clubs and thus continue to see "the gaps" increase due to lack of the same quality coaching if they even continue. Also at young age groups, playing with your peers makes the game much more enjoyable and increases commitment. This doesn't matter much if you are on a top ECNL team and is also unlikely to be a deciding factor.
I would be totally fine if they keep ECNL the same for current cohort and grandfathered in this change. The important thing to fix is the start of the funnel. Not an already biased funnel that is where it is today and near the end. I dont think that nets much change nor is where the value is at except for college recruiting (which I dont care much about).