It took a while, but popular demand eventually led to the release of the Snyder Cut of Justice League. If enough people demand a revision of Season 9 of Friendship is Magic (and a continuation of Equestria Girls) for long enough, Hasbro is likely to accede, especially if they consider a financially beneficial move, which it will be, if we also get them to revive the G4 and EG toys at the same time. We all just have to keep chugging away at this until we wear them down like a river does a mountain.