If I'm right, freshman come in with far too low of a formation IQ. But think this through with me. If you coached a player who could only execute plays correctly 40-45 percent of the time, would you play him? Maybe, but only on specific plays that you were confident he could execute. We don't have that level of control in the sim. So would you play him if he had to be in on every play? Probably not.
Better yet, put the onus on the coach. How successful would a college coach be if he devoted 80-90% of his practice time to weightlifting, running, film study and individual drills, but only had his offense and defense practice running plays 10-20% of the time? I would guess that the talent level wouldn't matter all that much if you sent plays in and it was a coin flip as to whether or not your players knew what they were supposed to do on any given play.
All I'm saying is that it makes sense, if you think about it in terms of actual football. If this is the case, however, tweaks need to be made to the formation IQ for incoming freshmen.