Harbaugh doesn't lose you games because of himself very often. It's happened but it's rare. He keeps a good culture for the most part and his biggest criticism is consistently picking trash coordinators.
I think for sure, Steve keeps John but says we gotta get a legit DC. Wouldn't surprise me one bit either if they say Monk isn't it either.
EDC needs to be better. The coaching staff needs to be better. But I think it's obvious you can improve the coordinators a lot easier than you could improve the HC THIS YEAR.