Jimjamesak
Already insane, UAA making it worse
Yeah that's basically my thought. You'd have to have some system that creates a financial parity between the two league. It probably won't happen, even if it did we're still a good 30+ years away.The only way to do pro/rel is to somehow incorporate it into a franchise structure. Like the EPL/FA system of "parachute payments", but on steroids. Even then, I don't think it'll ever work.
The biggest problem right now in the US is that, while MLS is stable, the lower divisions are nowhere near stable. The NASL is compounding the problem because they're trying to compete with MLS, not work with them. The USL is working with MLS but it's very recent and stability is off in the distance.
It's bad because it's effecting development. Player development, referee development, coaching development are all lagging because the lower divisions are a mess.