As far as level of defensive aggression, I doubt Chin has much say in the matter. If Mickey says NU will attack, that's how it's gonna be.In which case your backers and the ability of your DBs to cover in man become very important. Chin needs to get more aggressive
Mickey knows with his past and current WR's the soft zone is tailor made for easy yardage. He also knows the types of defenses that have given his really good receivers the most problems, and I expect him to try to incorporate that as best NU can with the pieces they have to work with.