If the plan is really that everything stays in place except Taggart is replaced with Bob Stoops, I'd feel better than if they cleaned house. My only remaining concern would be if Bob Stoops has really updated his charting expertise.
Any coach worth anything demands the ability to choose his own staff. Any smart coach destroys the leftover coaching staff just in case they are part of the problem. It has to be done that way. Any coach worth anything wants his guys and doesn’t want to worry about skeletons in the closet.