Very true but do you really think he's worth a cap hit of $19-20m? Does Mario completely take over and dominate a game consistently? Absolutely not. Whilst he is a top 10 edge rusher, do you really think he warrants the base salary he is set to receive next year? - More than any other player on the defensive line in the whole of the NFL...
It's not for Dareus' contract alone that I would want him to restructure, it's potential for contracts going to Hughes, Dareus, Glenn and anyone else - shoot, maybe even a Big Ben, Phillip Rivers or some other QB come 2016 if we're still QB interested and sitting late in the draft.
Never mind just those three, Kyle's making a pretty penny too in base salary next season.