I feel like this would just be a “pathway” note that embeds each of the notes in that path? ie. you create a new “pathway” note and then drag and drop the notes from the explorer insert the links. You can then you can add/edit/re-order as much as you like, write connecting content between the embedded notes, and create as many pathways as you need?
If this approach doesn’t tick the box of what youre trying to achieve (and I feel like I am missing something here), then it’s at least a workaround for it 
PS This plugin New Plugin: Journey - Find the story between your notes might also be of interest to you, although it’s “pathway” is via the note links rather than user selected notes