I re-watched Infinity War recently and it really holds up as easily the best team-up or Avengers movie to date. I don't think they'll ever be able to out-do it. The way all the separate threads of story carefully lead up to that movie and the way the characters all felt so well balanced without feeling overstuffed. The pacing is perfect, too, it's never boring. I'd have even loved to have seen the invasion of the Asgardian ship, rather than just the aftermath, and some flashes of Thanos invading Nova corps.