This is a really hard question. I get the argument that we have Burnes for 1 season and I believe that if everyone had stayed healthy this team really was 2 good bullpen pieces from being a favorite in the WS. With the rotation basically coming down to Burnes and Rodriguez and the mixed bag of everyone else, and the pen issues on top of it, I'm not sure how smart it would be to panic and throw all the prospects away to try to fix it.
Half of me thinks they should bring Mayo, Norby, and Kjerstad up and just let them play out the string so they get valuable experience and we have a better picture of who they are against MLB pitching and see where the chips fall with the rotation and the pen.