I really struggle with the Rudolph/Haskins/3rd Tier FA QB question.
I definitely do NOT want to spend any significant money on a FA QB just to watch them suck, or at best keep the team in the ole "never had a losing season" pocket. This is my issue with Rodgers or Wilson. Sure, they'll be significant factors in some wins, but they simply cannot, by themsevles, overcome the massive deficiencies that exist in at least 4 other position groups in the team.
Thus, the Steelers would have to commit almost ALL their cap space just to pick up a stop-gap that will ultimately do nothing more than preserve Tomlin's 8-8-1 dream. I'm MUCH more interested in picking up OL, DL, MLB and CB help so that the team can begin to shore up their core, particularly in the trenches and THEN focus on a franchise or at least high-quality QB that can give a balanced, sound team the chance to compete.
I have no issue with the team struggling a little next year in the standings if they are actively putting together a core that can gel and improve in the next year or two and give the team an actual shot at winning say... a playoff game.