Saw it last night, and I wasn't that impressed. There was definitely things I liked about, all the stuff with Stark, Thor and Romanov, and I also liked Nebula's arc, but without moving into spoiler territory a lot of the stuff that should have resonated with me really didn't.
Overall the film felt messy and like the russos were rushing to get it all done. It didn't help that the cinema i was in didn't have working air conditioning and was slowly becoming a sauna. I also I think at this point I'm pretty burnt out on marvel films, never thought I'd say this but i don't really find them enjoyable any more. I'm going to see it again next week with some friends who couldn't make it last night, so we'll see if a second viewing changes things.