My view of the stories in Marvel SuperHero is that only issue 24 was really planned -- and ready for print. That is the issue with Sabre-Tooth. Even the cover had been completed. I think Ms. Marvel was cancelled well before the Marcus storyline -- so there couldn't have been a plan to address her period in Limbo in the Ms. Marvel series. Indeed-- the Marcus storyline would never have happened had Ms. Marvel still be in publication.
I think most of the post Marcus material shown in Marvel SuperHero was produced specifically for that book -- and it was not very good. I would have to do some research on the matter, but I don't even know if Claremont had conceptualized Rogue by the time Ms. Marvel was cancelled. Mystique had already made an appearance -- and she would have become a major villain in that book instead of X-Men.