Talk:Alicorns/@comment-33383818-20171017112203/@comment-10390252-20171018122531

Pretty much zero.

From what I understand, Twilight's ascension was the end of Lauren Faust's original three season arc for the show from the original pitch. There was never any suggestion that the others would be involved.

Additionally, Twilight's ascension was such a fandom-dividing moment that I can't see the crew risking it with any of the other mane characters. Similarly, I can't see  them introducing a ninth mane cast member after Starlight Glimmer; the crew got the same sort of burned finger-tips as they did over Twilicorn.