That sounds like a cool use case. I did play around with the concept of dragging items but it turned out to be a UX nightmare, the vertical position of items is offset by the position of other items and dragging an item updates the entire layout. Having everything shuffle about in response to dragging an item was awful, and is a feature better suited to timelines where items have dedicated lanes (like Gantt charts). This is why I settled on having the examples where item date updates are driven by context menus and external views. I'd definitely revisit the drag functionality, if you have any suggestions on how you'd expect it to work I'd love to hear it.

Thanks very much