Problem

I'm trying to plot a legend that is rotated 90 degrees so that it neatly arranges along a long vertical axis I have, but there is no rotation in the legend definition. It would be great if the legend was not forced to have horizontal text and have all elements displayed horizontally.

Someone mocked what this would look like: https://i.stack.imgur.com/FqCgO.png

Proposed solution

if legend had a rotation parameter that would rotate the bbox around the anchor, it would be amazing!! Thank you so much for your hard work!