I will be honest, I really like the way they are marketing the movie. Honestly, they have barely shown anything on a movie that could possibly be three hours long and I didn’t think it would be possible for me to get any more excited for this movie than I already am.
So MCU has earned my trust. Even the "lesser" movies have at least been entertaining. But I still can't quite put together how this one will work. Infinity War had a motivated Thanos, 4 powerful minions, and an army of monsters. There was plenty of room for action.
Thanos is retired, his minions are all dead, and even if they weren't, there's nothing to fight for anymore. Where are the battles going to come from? Are they all just going to go beat up a tired, unpowered Thanos? Are they going to go back in time and refight the battles we've already gone through, but with the help of our new Mary Sue? It just seems like the battles we're emotionally invested in have occurred and there's no one left to fight. Does that make sense?