Nope.It is not really about the base, it is about the personnel. I refuse to believe that we cant recruit athletes for any of the base sets including the 3/4. The biggest issue I have is that when you go to a 3/4, 4/2/5, etc you still want to employ multiple sets based on match-up. For the past two opponents the 4/3 would have been more appropriate.
Can't do it. If you are messing around with switching from 34 to 43 you are asking waaaaaaay to much of your guys.
The responsibilities are just too different and nuanced to ask them to be good at both, not to mention the physical skill sets required for the positions in each are vastly different. Asking and OLB who <230lbs to set the edge vs a T or TE just isn't going to be very effective.