Interesting idea but how would you account for academies that don’t have players at a decent level enough for top tier football, prevent burnout of that one top prospect etc?

Also for clubs that get promoted, they are already facing an uphill battle to avoid relegation.

If they are forced to play youth too, that will make things all the more harder since the bigger clubs will just sign the promising players.

The number of games issue is primarily for clubs in the CL, EL, ECL.