I appreciate the OP and the conversation in the thread. We've had this same conversation in a few other posts, for the last few weeks, and in particular since Saturday.
I am of the opinion that this is not JUST coaching. Sure, it's coaching. But, it's also talent. It's also ten other things. It would be easy to blame all of our ills on Ash but we had a number of these problems before Ash got here. (Hopefully, we won't still be having them after he's gone, however).
People like to talk about the team that Flood inherited, as well as the recruits, as being some kind of awesome. They were good. Let me rephrase, they were good by our own historic standards. But, they certainly weren't top 10 caliber. More so, they weren't championship caliber. That means, even after you get a great class, you have to follow that up with a few more great classes. And, you have to have the coaching in place that can develop those players and win, both on and off the field.
We're also playing a much more difficult schedule than we ever had before. And, yes - we have a former DC as our new HC, which - after one season - feels all too Schiano-esque. I wouldn't go jumping off any bridges just yet. But, like you - I'm none-too-pleased with how the season turned out. If history is any indicator, next season will be a 5-win season. The season after that 7 or 8 wins. Well, that's how seasoned/accomplished coaches (and their staffs) usually do it. I'm hoping Ash does that here, too. Otherwise, he'll get tossed (assuming we have money) and hire someone else.