I read somewhere once that a player is best at what he is supposed to do, don't have your DL drop into coverage, make sure your QB makes most of your throws, KK does the kicking, etc.
It seems like to me, however, that some players are entirely too effective doing OTHER things. Watching a WR carry a football 45X in a game with as few mistakes as a similiar iHB and the same average is borderline ridiculous. Randy Moss would get killed if he tried to run the ball 10X in any game or tried to run the ball 1X between the tackles, the same goes for Marvin Harrison, a prime Jerry Rice and countless others. What I would like to see is that the WRs have a significantly more difficult time running the ball than their HB counterparts. They should be far easier to tackle and they should fumble way more when taking a handoff to offset the fact that they shouldn't be getting the ball that many times.
On defense, 100 DBs have become the preferred player to blitz and they are fazing out DL and LBs. I don't mind seeing DBs blitz but I think they should pay a higher price but unfortunately the ugly stepchildren of PMFB are offensive linemen and can't block them. I think that when their speed can get them around OL, DBs should be just as effective, but once they get engaged, DBs should be manhandled by the supposedly bigger and stronger OL.
Ronde Barber is a very effective blitzer off the edge, as was Rod Woodson, but if they didn't get to the QB off their initial rush and got locked up by an OLineman, then their rush was pretty much ended. I think PMFB should try to base these principals to the game.