Defensive explanations requested

I'd be down for the 3-4 just for the sake of trying something different for once, but I don't think we are close to having the players.

Our only good LB, Fujita, struggled and couldn't win a starting job in Dallas. The 3-4 scheme there is what is often blamed to explain him not starting. I've heard Vilma is more of a 4-3 guy. You need a kinda hybrid DE/LB kind of player to play OLB in a 3-4. Both our DE's are big and fat. I'm not aware of how different the CB/S responsiblities are in a 3-4. I think in coverage they are fairly similiar to the 4-3. The thing I love about the 3-4 is the exotic blitz packages incoporated. With fast LB's you can mix up your blitz looks and bring pressure from everywhere.