Honestly, this game mostly has choices where it just affects the immediate scene(s) and then the next scene after that is usually the same regardless. At least the choices that give different "content" depending on which choice you make, at least. So I could easily see something similar to most of the other multi-mods out there that allow for "see all options/scenes" or whatever working perfectly fine, since I doubt most of those ones have variables attached to them. But if they did, I would guess it would be as simple as doing a "you make your 'canon' choice, and then it asks you if you want to 'see the choices you didn't make'" or whatever, as I've seen in some games with multi-mods before. No Idea how to code that, but I've seen it done, so I'm sure someone with the skills could do it lol.
The choices that actually have long-standing consequences are usually self-explanatory, and tend to be "you get the content or you don't", from what I can tell, so they wouldn't be too bad to put into a walkthrough mod, although would be mostly unnecessary, honestly. Maybe they could have notes if we know certain choices open/close character routes, but I'm not really even sure how many choices that do that there actually are.