I'll say this...
He deserves the credit for being the sacrificial lamb for Caldwell's trial run.

Now I'm not defending Gus, his coaching ability, or anything like that.
But he was handed a roster stripped of every last ounce of talent, gutted. Given Blaine Gabbert/Chad Henne/and Blake's first 3 seasons at QB. Caldwell missed a lot more than he hit in FA early on (partially because the real good FAs weren't coming to sadsonville)
But we saw the talent this team had last year, Gus should have been able to do something with it, and after a few seasons we saw his in game managing was no bueno.

But dude fell on a sword for this franchise. He kept guys believing until that final year. He was the perfect coach for the insanely difficult rebuild Caldwell decided to pursue.

I gotta give him credit for that.

But as for the team? Nah... if anything, like mentioned above by someone, he probably held back guys by not pushing hard enough. And switching coordinators so often screams "I'm passing the buck (blame) to someone else" while also saying "I don't know how to assemble a good staff"

---