That genocide was still potent in the new film - when they had the flashback with a couple of the older heroes, I had a sudden flash of sorrow and thought “Aww, Syndrome murdered these guys, didn’t he?”
(Mild spoilers follow, but I’m not going to bother blurring them out. If people object I’ll edit it later.)
Agreed that the family dynamic was great, but the film didn’t seem quite as unified to me. In the first film, although we had Mr. Incredible separated, the whole family was part of a single story. In this one, Elastigirl’s adventures - which I did really like! - were a bit too detached from the rest of the family. And I can’t recall any scenes from Part 2 that were as brilliantly inventive as when Elastigirl was stretching herself down hallways and through doors in Syndrome’s lair. Oh, OK, some of the scenes with the portal hero were fantastic - like when she got Elastigirl up to the plane, and Elastigirl “lands” on the plane from underneath, and she’s panting in near-terror from the bizarre inverted freefall she’s just gone through. I’m going to have to pause those scenes at home in the future to figure out what’s going on with directions.
And the Jack-Jack gags … they were great gags, but it felt like scrolling through a set of “best cat gifs”. A little part of my brain was nagging at me and saying “Come on, they’re just pandering to us!” I think seeing it in the cinema with a crowd worked against it for me. People were laughing, a lot, which of course is good, but my reaction was “Really?! The joke was good, but not that funny.”