Just thinking out loud. i personally like MR and staff. wouldn't Bray be much better off staying for at least a year to get some seasoning on the 3-4? never hurts to have multiple types of defensive sets on your resume. hope he stays.
Said the same earlier. Learn a different system from a respected DC. Have some success, show ability to adapt, improve etc and then move on.
On the other hand, is it possible that with Banker and Stewart gone, the hiring of Williams and Diaco that the writing was/is on the wall and if Bray leaves it's a mutual thing.....
Out of curiosity, how is he as a recruiter? IIRC, Banker nor Stewart recruited any commits this year.