Neuf as the 6th ol would be an incredible luxury. I'd love to have him and Wallace fight for the 2nd guard spot, with the loser taking the 6th spot. Letting Wilson go makes a lot of sense.
Personally, I'd platoon the canadians at wil, and play woodbey at DHB. Woodbey is such an extraordinary outlier in his combination of size, athleticism, DB, and LBer skill sets. Playing him at half, and having him be the db in the run fit instead of Nichols would be such a miss match. Rolling out Shay, who is very similar in skill set at Wil, would take a big load off the shoulders off the Sam position as well.
We could have a full 3 guys at wil/mac/sam who can play the box like Lbers. Plus a DB in Woodbey. That would be a massive mismatch in the run game. Plus Allen, who is a down hill Safety.
In the Cover game that would give us interchangeability at Wil and Sam without subbing, but if slid Woodbey to Mac, and brought in Griffin, we'd have the same kind of mismatch advantage.
Allen, Woodbey, and Shay can give us the game-breaking versatility that we used to have with Biggie/BA/Kyrie. It would take us closer to being able to run the cutting-edge modular defenses we used to run. We'd just need more Inside/Out versatility on the DL.