I like the idea of reducing space based on the viewport height.

Here is how Twitter implemented this:
1- Reduce the space to 0 instead of 4px between each nav item.
2- Remove "bookmarks" and "lists" and append them to the more menu.

Lovely 😍 pic.twitter.com/bjGxXRFLfS

— Ahmad Shadeed (@shadeed9) September 29, 2020