And then there's the NFL factor, as more teams (Dallas this year) are moving to the 3-4. Would sit better with recruits that we're running a system that the NFL seems to be (slowly) transitioning to en masse...
Dallas has been running a 3-4 for nearly a decade. This might be the first year it isn't a complete joke, I think that might be why it's noteworthy.
To hear the talking heads in DFW tell it (1310 Ticket), Dallas was using a bastardized version of the 4-3 as their base defense in years past because they didn't have the personnel to run a 'true' or 'pure' 3-4 effectively. It may have been called a 3-4, but they were supposedly putting LBs on the line to pass rush so often (because the DL were so poor), they as well been granted honorary DL status.
Granted, I'm not much of a Dallas or NFL fan (like Green Bay, only watch NFL to watch how Nebraska kids do...though I whiffed on one of our former players in a past thread), so you likely know more their defensive history.