A few things about the raid of Cohen's home and office that I think aren't getting enough attention
Legal protections around attorney-client privilege what they are, getting a warrant like this happens only when the attorney himself is directly implicated in crimes. Ergo, I'd expect an indictment against Cohen to be forthcoming. This wasn't a fishing expedition, and Cohen was the primary target, already backed up by a great deal of evidence to clear this legal hurdle.
Mueller didn't raid Cohen's office - the Southern District of New York did. This means that firing Mueller won't stop whatever was found on Cohen raid. If he committed a crime and there was documentation of it among his books, computers, cell phone or other correspondence, its out of the hands of the DOJ and the WH.
Now in addition to the possibility of DJT firing Rosenberg and Mueller, I'm left wondering if DJT will issue a blanket pardon of Cohen.