In Writer [and perhaps in other Office Apps], the ability to drag Headings around, in the Navigation sidebar, in order to reorganize them, is missing. It’s so much easier to move a chapter to a new location by just clicking the heading text, in the Navigation sidebar, and dragging it to its new location.
I know the Promote and Demote Chapter buttons are available, but that can be rather tedious for a large document where the Chapter is far from it’s destination.
This feature exists in OpenOffice Writer, and made reorganizing chapters so much easier!
This is a feature that is very useful to me! So, I miss it very much!