I think a draft works fine if you’ve got a self contained college structure underneath to pick from, world football has no real feeder ‘system’ it’s a labyrinth.
Salary caps would be in everyone’s interest but how do you do that when you have competing leagues in multiple jurisdictions? It’s not like America where it’s one major league in one country.
For transfer of players contracts you need an agreed system under one governing body, even assuming FIFA and EUFA were in favour, why would the rest of their members go for it, Turkey’s don’t vote for Christmas.
I just think these owners are throwing their weight around, if they are in fact serious then they just don’t get European culture or legal structure. It won’t fly.