First, I really liked Infinity War and Thanos. It was an awesome movie.
I am a big hulk fan, and I hate the way they did the Hulk in this movie. It is not the fact that he isn't in it as much as I would like, as it makes him look like a baby.They really need to let him Hulk out and keep getting more angry as he takings a beating. Even if he was afraid of Thanos, I wouldn't imagine him cowering and refusing to hulk out. I mean, he loves to smash crap. He was going to take on Sultur who is stronger than Thanos (according to comic book geeks). Why wouldn't he be up to smashing some weak aliens on Wakanda. I just hate the whole arc they went with him on this movie. I feel like the Hulk is always ready to smash, and enjoys fighting, even if he is going to lose. Making him over think stuff seems stupid. Banner should be the thinker, and when Banner fails with brains, Hulk takes over and just smashes it. And if he fails, he keeps getting angrier and smashing it more.
I am glad that Thor is getting more and more powerful over his movies. I feel like they slowly have built him up and his growth in power fits the universe.
I really like how Tony has adapted with technology and became stronger through the movies. Thor has gained strength. Captain America remains rock solid in his ideals and doing what is right. They have done well with all of those characters. Then I feel like they screwed up the Hulk starting with Ragnarok. I was willing to overlook it because I was like, okay Disney just wants him to be like a "Bro" to Thor. And they can be smashing buddies while adding some comedy because he can talk. To be honest, I have lost interest (which takes a lot, I liked the Eric Bana hulk and Ed Norton movies), in his arc in part 4. I don't care for a thinking Hulk, that is what the other members are for. Hulk should be the loose canon, use at last resort, mass destruction. I am now more interested in Thor and Iron man.