1. A lot of Irving's injuries were simply unlucky, or because of something silly (like slapping the padding and somehow breaking his hand). He does seem a bit injury prone but I have a feeling he will stay pretty healthy next year, especially since they have a ton of solid guards now meaning he doesn't have to carry the team's load as much (They signed Jarret Jack which should help a lot).
2. I don't think you know Mike Brown well enough to assess accurately how good of a coach he is, but I suppose we can all have our opinions. I think the main reason for bringing him back was not because of his amazing coaching skills but because the Cavs want to land LeBron James once he is a free agent and he had/has a very good relationship with Mike Brown. LeBron James opinion of Coach Brown is that he is a very good coach and I feel like he would know the best out of everyone.
3. I agree with you 100% on this. It certainly raised my eyebrows too. Josh Smith is a wonderful defender. I might even go as far as say that his defense is on par with his offense (which is pretty darn good).
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs