First and biggest impression is that the exemplar has so many conditions to the immanence and transcendence effects that I'm glad I play through Foundry now. Still, gonna have to actually play it and animist to see how they really work, there's a lot to both.
Beyond that, one of my players is very excited to hear bloodrager is back as an archetype, and really leaning into the blood side of it. Personally I'm happy to see Inquisitors back as Vindicators, and while the ranger base was a little surprising, I think it works.
The Mythic rules are pretty interesting, and look like they'll feel incredibly powerful without needing to make everything else mythic to maintain the balance, just the bosses. Definitely gonna spend some time reading through the non-template monsters, Agrya, the Oliphaunt, and Verex-That-Was look particularly good, but it's nice to see that they're all an entire adventure unto themselves rather than just a statblock.