To some point I agree, but if you are saying that you don't need to train your 1st team players with the squad because they play regularly. Then this is total rubbish, what real football teams 1st team players don't train together with the squad.
Then they would need to add a small match play bonus, but you would also have to included fatigue due to players being over played.
It's that what your asking, if so your only adding to the issue.