There could be arguments over some of this stuff (e.g., why try to compete against the MWC with 70 man rosters out west, etc.), but I'd be for lower scholie limits applied to all conferences.
As I wrote, anything should be on the table at this point, including things like you propose here and other ideas. Can't argue with your last line at all.
To go back to it, the "no HS kids" thing, especially, makes complete sense. It would have opposition owing mainly to emotion and people pining for the past, but it's as simple as you wrote. They leave if they play. They leave if they don't. WSU is never signing HS kids who should be playing in college on day one now, and it very rarely did even in the best of times. So why sign them, feed them, house them, and train them at all? To try to claim some credit when a kid makes the NFL after playing at three other schools after signing with WSU originally? Makes no sense unless this NIL/portal system gets fixed, and I don't see it ever getting fixed in a way that prevents something much like the current environment, even if they implement some marginally impactful things like poaching fees. That won't stop anyone or result in a net benefit to the WSUs of the world.