As far as your first statement, that's why I'm 100% in favor of an offense for defense trade. Not only is there a lot of history to suggest that we'd be just fine on offense, but I feel pretty confident that this current version of the Jazz cannot win. So there's not a huge fear to me that we get worse, because the current state is not worth preserving in the first place. Personally, I would move players before Quin. Quin has had strong performing defenses in the playoffs when he had better defenders. OTOH, I don't think there's a single coach that can save this roster's defense purely through tactics. Playing harder would definitely change things, but I don't think our players didn't play hard enough in the playoffs. That may be the issue now, but in the playoffs the issue was primarily that they weren't talented enough defenders. A more versatile and adaptable coach would obviously go a long way, but I do think defensive personnel is a bigger issue than Quin's inability to make a defensive adjustment.
I get that people want the coach to say what they personally feel about the team. People want to "call out" players and vocalize that they're playing like ****. But this isn't a movie. I don't think that happens as much as people think it does in the real world, and I don't see why it's the most productive thing to say in the media either. I have zero problems with Quin saying that nothing is wrong and that they've just got to keep improving. I've been that guy who desperately wants a coach/player to say what I'm feeling about the team. And I think that's valid as a fan.....but taking a step back do I really have an expectation for a coach to make a "call out" or whatever to the media? Not really lol.