I really enjoyed it.
It's slower paced than most MCU films (only two real action sequences), with a tight story arc. I like that the script is laser focused just on the team and their dynamic, and how the whole plot extends from Sue's pregnancy. There is some humour, but it is much less "quippy" than a typical MCU film - this is the first one where Joss Whedon's screenwriting DNA is not very apparent. The art design is gorgeous, and the CGI is top tier - the film just looks great, and again stands apart from the MCU. And I love that is is completely self-contained - you don't have watch a single other MCU film or TV show to get it.