Here is an interesting zone pressure run by the NY Giants this season. Giants' Defensive Coordinator Steve Spagnuolo dialed up a non-traditional 4 man rush from a Dime personnel group and backed up the pressure with quarters coverage.
Nickel & Dime - Contain Rush
Mike & Nose - A gap, Inside rush lanes
3 under 4 deep zone coverage
Corners & Safeties - Quarters
DE's - Attack the OT, Drop
Will - Show pressure, Drop
The bluff of the pressure by the Will LB attracts the attention of the RG which prevents the guard from being able to help with the rushing Dime. The attack and drop tech of the DE results in the OT blocking no one.
Another factor in the success of the pressure is the usage of the Nickel and Dime as outside rushers. This pressure could easily be run from a traditional 3-4 personnel with OLB's filling the role of the contain rush. The OL reacts differently to OLB's as rush threats than they do to Nickel/Dime DB players. An OLB is a 50/50 or higher percentage chance of rushing the QB. A DB is much less likely to rush and the OL are less inclined to pass set to a DB aligned at or near the LOS.
Good stuff from the Giants defense. This is a creative way to generate pressure while rushing 4 and playing quarters coverage on 3rd & 9.