I agree wholeheartedly with IronMan and have been vocal about this since at least last season. If they get penalties, fine them -- the team has that right. Make it hurt. Hell, bench them, for all I care -- give a chance to a younger, hungrier guy. Just because a guy is a backup doesn't necessarily mean he's inferior; it just means he hasn't had a chance to shine. There are a number of superstars in the league who started off as backups.
And before you say you put the guys on the field who give you the best chance to win, what's the difference between losing with your starters and losing with your backups? If they can't keep their heads in the game, take them out of the game.
And now I will sit here and wait for the rain of derision from Zero2Cool. 😉