So, here is why I struggle with Tomlin and the ultimate results. I am not a fan old enough to remember the really bad times. But I was a fan in the 80s. Live through the ups and downs. And although I was never "happy" when stuff didn't work out (and man were there times in the 80s when it didn't work out) but you understood why. Talent levels, this, that and the other thing.
With Tomlin, he has always had either a very strong offensive or defensive, with the other at the time being either being serviceable or better. In the 80s, the result was understandable. The team's huge underperformance in the playoffs and such with Tomlin is not excusable or understandable in the same way. He has had so many good teams that they playoff record (irrespective of never having a "losing" season) and the regularity with which his teams succumb to the trash teams in the regular season is often just not forgivable or excusable.
I am not posting this as a "fire this or do that" response. Just to explain the reason why the continued mediocrity under Tomlin gets me angry or down at times. Tomlin is a lot like Cowher ... having a lot of passion and very detrimental weaknesses. Tomlin's inability to grow, though, is very troublesome. Is he really any different than he was the first year he was here? I'd say no. That is the issue.