One thing that could help the sacks is more opportunity. If the offense can get and hold leads that will force more passing situations unto the opposing offense.
These forced passing situations are where a high percentage of sacks are made.
I expect both sides of the ball to be materialy better on first down this year. Established and possibly improved running game, Kupp available, experience in scheme leading to offensive improvement. Defensively, more talent and growth in young players.
Special teams improvement could add multiple wins alone.