Yeah, I'm one of those negative Nellies...
In my defense, it's usually easier to go into great detail about a negative than a positive. I think most people here go in hoping for the best, so when it's good you can just say "Loved it," but if it doesn't hit you kind of feel compelled to explain why. Anyway, for the most part, I'm pretty happy with the show. I'm not in the business of hate-watching.
EDIT: So to further explain a subtle thing I think the show does well, I think the action was generally well storyboarded. Back in the stone ages, if you needed Superman to take a fall, he'd just stand there and wait for impact. It feels like Superman has an adaptive style to his fights, and when he does take a bruising hit, it's generally unavoidable. In this specific episode, he intentionally took the hit for Mxy (protecting the bad guy, even). Superman's intentionality in his fight tactics feels present.