Is that he'll have input during the draft process. Seattle has 10 draft picks. They will probably draft at least 2 defensive linemen, maybe even 3 or 4. Quinn's built a sterling reputation for identifying and developing defensive linemen. Given Seattle's needs on DL, this is the best hire they could have made, IMO.
And who knows, maybe Jaye Howard will finally see the field as a 3rd down specialist? He may suck against the run, but he was one of our best pass rushers in the preseason. I never agreed with the decision to have him sit on the sidelines all year. Jaye Howard broke out during his last season at Florida, his first with then Florida DC Dan Quinn.
Edit: In Quinn's radio interview he was asked what a "Dan Quinn defense" might look like. In his answer, Quinn described his defense as "aggressive" and "attacking" and "going after the ball."