I'm a c# software developer with absolutely zero Unity experience. Over the last day and a half I've cobbled together a scrappy little mod to add folders to the tracking station. I wouldn't be able to guarantee a smooth experience or the most optimal of code - I just wanted to see if there was any interest in the community for this to be released this to the public.
I'd probably want to take a day or two to polish it up, but the main piece of functionality is allowing the player to sort their active missions into collapsible folders with 1 layer of depth.
Side note, if anyone knows of any mods that do this already please let me know - I'm familiar with Haystack Recontinued which doesn't quite do what i want.