Perfection! It really shows that you have thought about the DX and APIs all the way through, there are so many good and clever features here. I've always been a fan of Radix, but this is one level higher in abstraction, making it so easy to get up and going. The theme component is genius as well.
As for feedback and questions, and I guess you guys already have a huge backlog, but, are you planning on porting over more of your primitives to the theme side, like the toast and form? Furthermore, components like pagination, editable, and even calendar/time-related components, would be such a blessing to have baked in. Also, modifiers for shadows, etc in the theme panel, cheers!
