The best parts of Infinity War were the Guardians, but that just made me want to watch the Guardians of the Galaxy movies again. Whenever superhero films become too serious, it's just not nearly as fun. Here's hoping Deadpool 2 is still good.
However, the best part of Infinity War was the last ten minutes when Thanos fucks off and people just start dissipating. There's no music, no fanfare, just confusion and absolute silence. That and Spider-Man just freaking out, were the most impactful scenes. And if Shuri is gone in the next one the movie is dead to me.