Having now seen it, I'm a bit underwhelmed. I was swayed by the amazing review score, but I don't think the film is as good as the reviews make out.
I didn't dislike it, but I wasn't blown away. Made me want to watch the first one again so I can compare which I think is better. Also felt, to me, like the first one stylistically. The original had huge reshoots because of test audience reactions, and so it ended up feeling like two movies mashed into one, with corresponding tonal dissonance. This one gave me the same feeling, though I know James Gunn supposedly had complete control over it.
Harley was awesome, though.