No reason for this to be specific to kiwitrees-nova, so I’ll move it to the standard support forum.
As it happens this was already “in progress” for both versions, solving both your issues.
Technically, the old list was sorted alphabetically – but by its native spelling, so Hebrew was near the end with other script-form spellings. But that aside, I agree it was not helpful.
The vertical sorting was not really possible (easily) until some recent browser (CSS) solutions became widely accepted. They now are, so I am moving these, and the similar layout of place lists, to a vertically based design for the next release of kiwitrees.
Try the attached replacement /admin_site_config.php and let me know how it is. (You may need to clear caches to see results)