I'm happy after the update plying the 4-3-3 again after almost 2 years with ma 2nd team.

The teams are calibrated to give the role of protagonism to some players so thats why some teams have as better scorers the attackers frrom the 2nd line than the STs, but as said, now I use 3 sts and are all awesome.

Then switch the players have a consequence that depend basically of the match scenario, which is different in every case. You should start playing with the best avq players where you see that they contribute more and then you can, if they dont participe as you expect, switch their positions, perfectly a ST can stay as aml-r, amc as mc, etc. having a good impact in the simulation.
Cheers!