I would like to be able to move elements in the navigator panel entirely by the keyboard.
Mouse dragging is extremely uncomfortable. Most programs containing a tree have shortcuts for pasting an element either as a child or a sibling. As far as I can see on Keyboard shortcuts in Webflow | Webflow University there are no special shortcuts for arranging elements in the navigator panel.
The most convenient shortcuts I’ve seen so far are for this purpose are in the KeyNote tree-structured editor (GitHub - dpradov/keynote-nf: Tabbed notebook with RichText editor, multi-level notes and strong encryption.).