Measurables have their place but there's no great measurable for just being a heckuva football player. Henteges is showing us that on field. I like him and he very well make Doyle replaceable next year...and I really like Jack but this is a very positive cap development.
Surely you can see without me telling you that an owner is not breaking a contract when operating within the bounds of that contract.
On the other hand, a player is breaking a contract when he operates beyond the bounds of a contract.
That's an interesting point. But I don't think it's workable in reality.
If you signed a contract with your employer and you were guaranteed the next 5 years salary "no matter what", how hard would you work for the next 5 years?
I'm sure a lot of players would earn their contract "for the love of the game", but I think there would just be too many that would "take the money and run"... Think about the guaranteed money that was wasted on guys like Jamarcus Russell, Albert Haynesworth, Corey Simon, etc...