If not user-friendly then many people will not try/use it. That's just the way it is
I have no need for your idea as I have a working real navigation in my UIs mod (thus no need to test it). I do feel you are overcomplicating things. I would suggest you learn the game's architecture (what functions the scriptmanager exposes and how to use them) first. It will make things so much easier for you/everyone else
You'll also probably get a much better response/feedback if this was originally posted in the SH5 Mods forum.