According to Meghan McCarthy's Twitter page, it is said that a future episode of My Little Pony: Friendship is Magic will be about disabilities. Now I like the sound of that, seeing as there's not enough discussion of importance on this in cartoons for kids, which would be good for them to know about and understand. However, last I checked, while it was Lauren Faust's original intention to have Scootaloo be a disabled Pegasus unable to fly for life, Scootaloo is simply flightless, which has no excuses to back it up (Pound Cake, anyone?). As for Ditzy Doo, her speaking role and a-wall eyes stirred up a controversy (thanks a lot, horrible soccer moms) that resulted in her being reduced to having a "Where's Waldo" role in the series. Now both of these ponies are the only "disabled" characters we know of, so this episode Meghan McCarthy first mentioned as an answer to another fan question (won't they just cease already?) could be about Scootaloo... or Derpy.
Or it could be about neither of them...