The good guys aren't any better: there's a wild cornucopia of life forms populating the quantum realm. The character design is inventive, but they didn't spend much time giving them personalities. The rebel leader is your stock heartless militant who grudgingly respects the contributions of the newcomers at the end of the movie.
If you are wondering where the Van Dynes fit in here, well, me too. Michelle Pfeiffer's Janet has several long scenes of retconning exposition. At the end of the previous Ant-Man, we were led to believe that Janet was stranded in the Quantum Realm for 30 years, like Tom Hanks in Cast Away, but with more CGI. Now Pfeiffer is burdened with explaining, no, the Quantum Realm was more like Mos Eisley Spaceport, I led a revolution against my old roommate Kang, and I had an affair with Bill Murray. The massive re-inventing of the Quantum Realm is all explained as "Janet had PTSD so she never wanted to talk about it".
Scott's daughter Cassie is a teenager with her own plot, and her own super-suit. I feel the worst for Evangeline Lilly as Hope/The Wasp: she has very little to do.
My Grade = C