I remember when I first watched the Ranma anime and was floored at how the Furinkan Stalker story wasn't in the manga because it was absolutely something Gosu would've came up to get Ranma's attention and get him down to his level on the social hierarchy. :T
I really liked it too(especially that one scene in the classroom between the two) but I noticed that while the anime version of Gosu is always hatching a new plan to get rid of Ranma the manga version sticks to stalking until an opportunity falls on his hands(Kuno, paper dolls, the armor) so ig a manga version of it would first have Ranma do something humiliating and Gosu catching it and spreading the rumor?
Sorta unrelated but one thing I liked about the anime was that Ranma is way nicer to Gosunkugi than in the manga making their dynamic a little different too. I always wondered what would happen if manga!Kugi met Nettohen!Ranma lol