I'm sure it's on the to-do list, but some more functionality for the Object Styles would be great - being able to update the style that is already used throughout, would be a start. I saw one other topic that said styles are not currently linked to objects, which means that currently "styles" is more of a shortcut to applying one-off mods. Looking forward to the full version!
And I'm sure it's covered elsewhere, but in case not, manipulating inserted images within text frames is a bit cumbersome at the moment. Rotating is fine, scaling could use some handles, etc. You could one-up InDesign by having some easy to apply common filters for those images. The K-only button is a great feature! Add a vignette, adjust contrast, etc. would save a step in the workflow (image mods in Photo).
Otherwise, I'm super thrilled to be using this product!