Dr Outback
I don’t know how the Equestria Girls Sin-off will turn out, but I wonder why they didn’t try making a Spin-off based on of the many crusades of the Cutie Mark Crusaders. There could be many episodes based on that concept alone. It would be more promising to be a success because it uses characters and a situation that the audience is familiar with. It would also would be a good chance show off other Crusaders besides the main three such as the Manehatten CMC. It seams there are more and more episodes of the CMC than the main 6 themselves. As much as I like the misadventures of the three (now four) fillies. I think there would be more room for other stories if the CMC had their separate show.