The thing about it is that in today's game, that's the set that most Defense are in a majority of the time anyway. Just a matter of whether there are 3 or 4 guys at the LOS with their hands in the dirt.
We've seen it a lot. Shoop I think mostly ran it. O's today do not give you much opportunity to run the 4-3 base unless you have extraordinary OLB's who can cover WR's consistently.
I'm not sure it would without Monte calling the plays. Didn't Pruitt run a scheme based on Cover 2?Or a 3-4 for that matter . . . Nickel and Dime packages are more the norm these days rather than a down and distance decision, this was stated above, with teams pushing 4 wideouts with TE's running routes against the traditional 4-3 or 3-4 defenses are doomed to giving up large chunk plays.
I like the morphing of defensive philosophies to address the "spread offenses", looking back at Monte Kiffin's Tampa Two scheme I believe that it would be great in today's game.
GBO
Pruitt seemed to favor a 5-1-5 that opened the short middle of the field.
The transition should be easy and help Crouch return if nothing else. The league has moved away from a power run league and is more of a passing league now and that has really changed the role of an LB.