Didn't realize the walkthrough was "harder" as most mods I see usually have one (or at least something that provides data on the result of a decision). I know it is very involved as the modder will have to know all of the currently known downstream effects of a VN. My point is that the walkthrough mod doesn't mess with the game stats or add in music options, multiple pop-up scoreboards/cheatboards/etc., or many of the other things that, from the outside looking in, would seem to create more avenues for corruption and failure than turning a response a certain color and providing what is effectively a footnote as to the known impact of the action ("love +1"; "leads to sex scene"; "ends route with this potential LI"). The things you and Sancho do seem to add in a significant number of additional dependencies that a walk through doesn't seem to do.
Maybe I'm not "getting it", but from my limited experience with such things, more dependencies mean more things that can break, and that was my basic point. I think it is proven out by the fact that you and Sancho have caveats about the potential impacts of your mods on past and future saves, and that it is people using these multi-element cheat and enhancement mods that tend to run into"saves" trouble most often.