If Steele were to get the job, he'd do his damnest to keep together as much of the defensive staff he could. I have a feeling Mickey will exit with Bobby, so he'd have to either promote a coordinator (Haggins maybe) or bring somebody new in. If Mickey goes, I'd love to see him try and get Colzie to stay on/come back as DB coach. If I were him, I wouldn't want to change too much from a good thing.
On the offensive side of the ball, I'm sure he'd do what he had to for Lilly to stay. He's too good of a recruiter to lose. Other than that, I have a feeling he'd make some real changes to that side of the ball.