I will give you the history lesson on madden because obviously you dont know where and why it all started.
Back all the way in 1989, the devs originally wanted to make "John Madden Football" to be 6-7 men playing on the field. Madden himself, said "He will not put his name on it if it is not real" Every year madden has slowly added more and more into the game. EA's moniker is "If it is the game, then it is in the game" In Madden they have tried to create an NFL simulation.
Madden 10 sell point was this
http://www.ea.com/games/madden-nfl-10
The clearly say they capture the authenticity and emotion of the NFL like never before. This is a complete lie when you compare it to how progress works in madden. There is nothing authentic nor realistic about it.
Your idea about a simulation is flawed. Have you ever heard of flight simulator? All of the sims series( Sims 1-3, Sim city, Sim Ant ect ect)? All of the Tycoon series(Roller Coaster or Prison Tycoon ect ect) Civilization? Spore? Romance of the Three Kingdoms series? There are countless games that are made that require the player to manually perform a task or give commands to achieve actions.
In a flight simulator a player commands his plane and moves it, lands it, ect ect. In the Sims series the player controls his player/creature and tells them exactly what to do. In civilization the player commands his entire empire and leads them. In Spore the player has to actively fight or grow to improve.
Those are all simulation games and they involve human interaction to be able to work. Sure you could just set them to do nothing and they would function but they would not function properly. A simulation as defined above pertains to all of these games.
Madden has been trying and saying for years that it is the representation of the NFL league. They claim, if you see it on Sundays then you will see it in the game. In fact, they are trying to make Madden into a simulation and under the above terms Madden already is a sim and can in some areas be considered a proper representation of the NFL but in the area of progression and the off season they fail epically.
People want Madden to turn into a complete simulation because EA has all the rights. They are held to a higher standard to make the game be not just a close simulation but an exact model of what really happens in the NFL. Dont believe me...Just read half the forums. People cry out to see colored shoes, less robotic animations, proper progression, hand warmers, proper skin color of their players, correct stats for their players...It goes on and on and on. They want an exact simulation of what the NFL really is...And EA has listened and made the game more like it.
Almost any sport game when you break it down, is partially, if not as a whole a simulation as defined by the terms above.
As to try and answer the question you say I have been avoiding, Just because a player has A potential does not mean he will become a 90+ overall player. I have never said that there should be some in game factor of risk/reward and to be quite honest I have no idea what you are rambling on about.
I have in my previous posts explained how a system could be implemented that would work for everyone(besides the people who hate potential)
Take HC 09's system that players grow all season long. They grow faster in X areas because they have a good coaching staff and they are getting some playing time(practice falls under this) Each stat the player has will have to reach say 2000 points to increase a total of one point. So if a player gains 2000 total points in awareness then he will gain one hard point of awareness in the game.
To build further on this, you could take 2K5's system of training your players before game day. You can have them work out, study film, ect ect and that could contribute to getting to the 2000 point total to increase that hard point +1. The training staff will influence how well they can grow there during those activities.
Another twist could be that Vets also help increase how well players grow.
The flaw in this system is that players HAVE to have a potential. If they do not then all players could grow to be 99 overalls. Teams like the Pats and Steelers would always have talented players because of their coaching/training staff are some of the best in the league.
I know the dev team is capable of implementing this system. They did it in HC 09. They have the framework sitting there to use and then they go with a PBP system for M10...