We didn't know how to run a 34 before we did it two seasons ago. If it was so much easier to stock with players, it wouldn't matter. Teams would move to it. In the NFL, it's a copy cat league if they believe that what your doing will work. That's not a valid reason as to why more teams don't do it.
Currently, we have Ware who could really play either DE or OLB. We have Singletary (FA not drafted)who was here before we ever went to the 34. We have Carpenter who will probably end up good in a 34 or a 43. We have James who we drafted and will probably not be good in either scheme. We have Ayodele who we signed as an FA (not a drafted player). We have Burnett who will not work in a 34 who we drafted, we have Glymph and Fowler (not drafted) who are nothing special. We also have Hoyte who is now a FB.
In short, we have two guys IMO that we can say we drafted that would probably work. Having said that, one of those guys is going to be good as an OLB or a DE and the other is going to be good as a 34 LB or 43 LB. By the way, we spent 1st round picks on both those guys. The idea, I thought, was to find OLBs for a 34 that would be easier and cheaper to find.
If your going to say that Lacewell and Jerruh drafted guys for 10 years that never worked, that's not entirely true. They did draft some good DEs in that time but that's here nor there. We could say in a 34 and Jerruh and Lacewell could do the same masterful job of drafting for the 34 they did for a 43 DE. It's the people drafting not the available talent in that deal.