It'd be nice to be able to create a hub and then post content as cards that are horizontal and appear across the top (like they are pinned), but then any community engagement within that hub occurs within a vertical feed.

For my use case, think of it in the context of a course, where I create a series of videos to post in a hub as asynchronous / on-demand content or curriculum, and those remain "pinned" and viewable across the top of a hub, horizontally, as cards. Then, whenever a student or I want to post messages/videos for conversation over time, those posts appear as a feed, vertically. This would enable me as a coach to make sure course curriculum isn't buried and clearly segregates curriculum from community engagement/discussion.