The Ravens win it all, Harbaugh gets a 2nd SB title.... how is he remembered? HOF lock at that point? Does he continue to coach, or step away?
The Ravens go out earlier than expected, let's say they lose the Divisional Round game at home. Does his seat get hot despite the regular season success?
2nd Super Bowl makes him a HOF lock if he wins and walks away from the game accomplishing nothing else. Though it took Tom Flores with 3, way too long. He'll keep coaching through Lamar's tenure. end of that he may be pushing 70, then call it quits maybe. But Pete Carroll is 72. Belichick is a dinosaur.
Another divisional round loss and I'd heat his seat up. Bisciotti won't though. The job is his unless they start going 5-12 with a healthy Lamar. I'm sure Steelers fans are as tired of Tomlin as some of us are with Harbaugh, and Bisciotti envies them.
Even with this run, I could take him or leave him. Monken or McDonald could take over head coaching, still call their plays, and the results are the same. Harbaugh has a list of mile long of people he could thank for his success. It's hardly his own doing.