Very happy Peter Capaldi got an opportunity basically gift wrapped for him. I knew there'd be less of him than I'd prefer, but I wasn't expecting him to get a chance to act the fuck out of a scene.
EDIT: I should probably add something more of substance lol, I think the script to this shines. Many clever gags that aren't just funny, but enhance the themes (such as the hysterical Bloodsport and Peacemaker wrecking the people who turn out to be good guys, or Weasel instantly "dying"). It also manages to pull all the various strands together in a very satisfying way at the end, and it feels very personal to James Gunn regarding the very reason he ended up making this film in the first place.