It definitely takes a full team to succeed, josh had a season with minimal sacks and INTS, in part because of the success of Cook. We were more of a ball control team last season, much more balanced but still dangerous.
I'm not worried about the cap. We extended key players with good contracts, the cap always goes up significantly, contracts fall off every year, Daquan Jones, regretfully Milano, AJ, Bosa, all go away next season. We drafted a lot of defense this year to replace veterans with rookie contracts.
We can afford Cook if they want to.