So I remember this one kinda old theory (by The Brony Notion, I think) about Equestria and the EG universe. It was like, pony Twilight and Sci-Twi (this was pre-Friendship Games, btw) would stay in Equestria while both Sunsets would stay in the other world. But now, after the finale, maybe something like that won't be necessary? I mean, Starlight could be the pony to keep the two worlds "in balance" I guess. What do you guys think?