@Sinnie – There is a lot to digest and mull over in your post.
Right now, I urge you to try the Vendetta demo. This is a project (on hiatus) that is being developed by a very smart and experienced software developer.
It is relevant, because he utilizes what is described as a bicycle hub method of pathing.
Once you experience the demo, and perhaps dive into the discussion thread where some of this is discussed, we can go forward.
I would like to go into this further, but for now I can’t. Once I get other tasks completed I will hopefully return to this.