And you would be basically resetting the defense when the roster is almost complete, so the timing in that asoect would be good

But...

It would be Wabissa Bede and PJ Horne's 4th different defense in 4 years, with VT switching defenses midyear under Buzz

For Nolley, Wilkins, Radford and Kabongo itd be the 3rd different defense.

There is something to be said for the buy-in from the players when they know this is the defense they need to play to compete nationally. If they truly believe that way about their current style, then by all means...but if the thought is you can change it later, I think you run the risk of making heads spin and reducing the buy-in to the philosophy