They could implement this type of update, because in friendlies, apart from the fact that it only influences one variable of the training sessions, it does not influence other aspects except for testing tactics. That is why I think it would be a very useful tool to test players who are on the bench and see if their skills influence the match.

you can create as many friendlies as you want

there's no need to add nicmo work to create special mechanism for changing tons of players

the problem is that you waste energy for friendlies, so the suggestion is good
+1

+1

I think that it has already been suggested in the past, but still.

+1

+11111

+1