I would love to see some type of indesign support. I have seen 2 prototypes on how digital magazines may look like in the future. The simple transitions, navigation, and video integration looks like it could be created with flash catalyst.  It would be great to layout a magazine or brochure in indesign and transfer it to catalyst on a per page basis.

Being able to add page transition like page flip or slide elements off the page inside indesign. Then add further interactive navigations, animations, and video in catalyst would be nice!!