Originally Posted by
Goggindowner
Cap was against the Accord because it removed the Avengers' choice in how they get involved in conflict. Signing it meant being lapdogs, going wherever they were told, whether it was a just cause or not. This explanation is literally said, almost word for word, in the movie.
As for his cohorts' motivations (beyond sharing his opinion about choice):
Falcon- Goes where Cap goes, so it was always going to be that way
Bucky- Again, duh
Wanda- She dealt with her guilt, but how was she ever going to make amends if she was sidelined? What Cap told her was, basically, you can't always save everybody, but we do what we do to save as many as we can. Well she basically got grounded by Stark, so she wasn't going to be saving anybody, and what are the chances the UN would ever put her in the field once they took control of the Avengers' activities? None of that was ever explicitly stated, but I thought there was enough to get there.
Hawkeye- Yeah, he retired rather than sign the Accord. Yeah, he has a family and a life. But it was never stated that he wanted to retire or was happy with what was happening. He felt strongly enough to quit rather than sign, so it isn't that much of stretch that he felt strongly enough to take action and do something about it.
Ant-Man- Him joining Cap's side has basically the same motivation as Spiderman joining Iron Man's side. He was called up to the big leagues and was just happy to be included. It's the weakest of all the motivations, but it is literally the exact same as Spiderman's. If you think about it, Ant-Man and Spiderman both had plenty to lose for joining either side of the fight.
Zemo's Plan- We are never told that he explicitly intended for Cap and Iron Man to follow him to Siberia. He may have had no idea they were coming until they got there. If you think about it, once he had the proof about the Starks' death, he could reveal it whenever and know that it would put Cap and Iron Man at odds over Bucky. He may have just gotten lucky and hatched his plan sooner than intended. His only stated mission in Siberia was killing the other super soldiers kept there. The Accord wasn't part of his plan, but its entirely likely that he just took advantage of the situation once all of that started to shake out. The team was already dividing and he needed to push the wedge deeper. The Bucky reveal alone would have torn the two main Avengers apart, everything else was just icing on the cake.
I really enjoyed the movie. A lot of the plot holes that are being brought up I didn't see. I thought that most of it was pretty well insinuated or hinted at. Yeah, some of it wasn't very obvious and could have been made clearer, but it was there. I never saw BvS so I can't really draw any direct comparisons between the two films, but just from what I've heard I can't see how BvS could possibly be better that CA:CW. It wasn't perfect, but it was pretty damn good.