- Firstly, the movie was not as original, daring and creative as IW (revisiting older movies was in part, a tiny bit lazy). 
- The shield should have gone to Buck. The MCU rubs Steve's and Bucky's very special friendship in our faces since the beginning + he has the super soldier serum as well. Feel like beating up his other friend Tony was lessened in meaning through this somehow. 
- I could care less about the time travel stuff because I usually tend to ignore plot holes that relate to time travel. However, in this movie, it felt like they rushed the explanation and left too many questions unanswered: How did Caps manage to take the stones back (Tesseract was broken, soul stone?, Aether?), what happened to Mjolnir, at what point in time did he go back to Peggy, are there multiple timelines now or not (Only the former would make sense tbh)? What the heck did Tony "figure out" in the scene where he completed his time travel GPS-thing? Was he working on it in secret for years or did he just figure it out casually in a day or two? Would any of you jump into this with a one-liner saying his daughter cannot be undone? I do not know, but looking at my son, I would have had much, much more reserve about going back in time and accidentally changing something I'd regret. 
- I did not like the women gathering scene at all. Again, too overt and thus illogical. As if all of a sudden all women would follow a calling and drop their things across the battlefield, while all men just watch in awe and think "I better not join before I am considered sexist". I prefer GoT, where characters like Arya and Lady Brienne are simply strong and self-confident through the narrative and their development - their story speaks for themselves without the necessity to put gender above anything. 
- Tony's death. It is a creative choice, yes, and we did not like it or deem it necessary. They should have either killed off Caps or simply let them both retire. I do not see the sense in the killing of Tony when he leaves a daughter and Pepper behind. I simply
- Thor. Thor is the biggest problem we have and ultimately the reason why the movie as a whole sucks to us. To us, Thor is nothing but a running gag, a running gag born out of a flagrant plot device. It is so obvious that he is fat and drunk because the plot demanded him being nerfed, specifically to let Caps shine and eventually turn him into the better Thor. Sometimes that works, but here, it is just straightforward inconsequent and illogical to us. There could have been many ways to let Thor be badass and still let other shine: Let him solo the black order, buff Thanos etc. 
But this was a disgrace. It undid his development of Ragnarok entirely: In his last solo iteration Thor became King Thor, he literally lectured Valkyrie about her drinking problem, he literally said that he chooses "to run towards his problems", he had ONE last conversation with his dying father about who he is meant to be and what Odin's legacy means. He matured into the proper 1500-year-old god that should and imho would have not turned into a drunk, fat hobo gamer. Talking about logic: So Valkyrie can drink her brains away for decades on Sakaar and be in top shape, but Thor can't? So Steve cannot even get drunk because of his metabolism, but Thor is fat from earth beer?  Moreover, in Ragnarok, it was established that Thor is not the god of Hammers, but the god of thunder, as in, the source of his power is him, not Mjolnir, yet Steve summons lightning like he did nothing else in his life. Not enough, Steve even wielded Stormbreaker and had to save Thor's ass. To me, this was just over the top and in the end, it felt as if Thor was inconsequently nerfed to let Caps shine. 
- Hulk. He was my last straw when the end battle began. Yet, he did nothing. There was one single frame where it was hinted at that he may just have smashed an outrider, but who knows. I get the professor Hulk choice (although it was a let down that it was brushed over how it happened!), but to turn THE powerhouse of the Avengers that is loved for his brute force and feared because of his rage into a selfie-taking, joking nerd that does not fight anyone is more than just a tiny issue, its a disgrace. I simply do not understand how they could not see that this would upset Hulk fans, especially after IW. 
In sum, we as massive Thor and Hulk fans that went into the cinema with two clear expectations that we simply had to see (Badass Thor f@#$ing sh@# up and Hulk getting his rematch against Thanos). I feel like the endgame should have been a proper ending (yes, I know Thor will return, BUT this movie is theoretically the conclusion of a ten-year journey and should complete ALL character arcs) for all characters. I feel like they messed up with Thor. Call us fanboys, but we are certainly not trolls, we do not hate the movie because we enjoy it or like to troll, no, we hate it because we simply....hate it 
