If it’s an open competition I have a lot less concern and if it has far stricter spending rules that protects against doping then I might swing in its favour. upto UEFA to offer something better.
Devil is in the detail.
I think they'd be best having say a set of five 10 team leagues but with relegation and promotion being something like 5 teams. It would make the competition pretty fierce to stay in each league and also it would make sure that the leagues varied each season so it wouldn't get tired. Trouble is, whichever way it goes it will mean a shed more games.