This is not a Captain America film...

Rating: 7/10 (1 May 2016)

... it's an Avengers film, which kind of sucks. The Winter Soldier was a great film, and I had hoped for a good wrap-up to Cap's trilogy. There's always been a reasonable amount of cross-over (such as Iron Man 3 drawing on events from the first Avengers film), but the Captain got short-changed on this one.
The second issue is one of the plot. The idea of registering super heroes is a good one, and has been explored in other works (such as Watchmen). Here however it's a bit half-baked. The motivations are all mixed up and wrong. The split between the Avengers seemed forced and unnecessary.
Iron Man's motivations for signing were okay. Captain's refusal is a bit shaky. It would have helped to show a situation where the Accord prevented them from doing something.
It's not a bad film, but disappointing that it co-opted for the Avengers, especially when they have two more films coming up (Infinity Wars).