Well it could as you can find 7th round players with "A" potential. I see both sides of this. I want is progression that is mostly based on production but there has to be a limit for some guys. Head Coach did this very well.
My example is look at Randy Moss and the Vikings. They had Jeff George pass for almost 30 td's in like 13 games. Was it because Jeff George went from a 70 rated player to a 90 rated player, or was it because of the offense and Randy Moss?
After Daunte passed for 39 td's and had QB rating of 110+, he should be a 99 rated QB going into the next season, but in real life he dropped way off before he got hurt without Randy Moss and should be rated by Madden in the 70's
Now should the George, and Culpepper's rating fluctuate from 70-90, or 99-70 or were they really QB's that should have Madden rating in the 80's and their situations produced the disparity in the stats?
I liked how in Head Coach you could draft a guy like Jack English and if he played well he could be a 99 rated QB, but if he didn't he would stay in the 80's, and the rating increases were based on production for example if Darren McFadden had multiple years of catching 70+ passes he would eventually have a 90 rating for catching, but if he didn't he would stay in the 50's.
So far the progression system looks ok, I do wish it would progress you every few weeks to make for breakout seasons, and it would be nice to be able to "scout" players from other teams to open the potential rating.
The more Madden moves towards what Head Coach had the better it will be, Josh and Donny did an amazing job with the game and mixing Madden graphics and gameplay with HC off-season franchise stuff would make one heck of a game.