Let's start with what I liked about Pacific Rim:Uprising:
- John Boyega was good, better than I was expecting honestly. Cailee Spaeny's acting was enjoyable too.
- The story, while nothing exceptional, was interesting enough. It had a nice twist that I thoroughly enjoyed.
- The CGI and VFX were definitely better than the first one. Less shaky-cam too.

Now for what I did not like:
- While I said above that I liked the story, I felt there was too much of it. The movie would probably be better off deleting about 30 minutes of the first half.
- Not enough Kaiju. While the JaegerVSJaeger battles were nice, they were not what I was looking for in this movie.
- The young pilots didn't add much for me. I felt they gave the movie a kind of Ender's Game vibe, which it did not need.
- The overall artistic style lost the dark and rainy aesthetic that I really loved about the first one.
- Scott Eastwood was not good. Super generic character.
- The Jaegers (and the Kaijus, to a lesser extent) lost the weight they had in the first movie. They felt so light, punches didn't have the same impact.

Overall, it's definitely an enjoyable movie, provided you know what you are about to watch. It definitely targeted a younger audience than the first installment. As a result it felt more like "Transformers: Now with some Kaijus" to me, losing the appeal that made Pacific Rim such an enjoyable movie.
If there will be a third movie like they hinted at the end, please put Guillermo DelToro back on the director's seat and give him carte blanche.

[spoiler]The small Jaeger rolling away like a ball was so dumb[/spoiler]