Yeah, basically it will help disguise what the defense is going to do. and help them react to motion etc. without giving as much away or being out of position.
In GB's case, they'll be in 4-2-5 with two Will LBs, which leaves them a little light vs. the run but having one of those safeties up should help.
I think McDuffie will be the Mike to start, when they go with a base 4-3 (15-20% of the snaps). Maybe Hopper or Quay is eventually that guy.