After rewatching the two part pilot episode and Luna Eclipsed (I was in a Luna mood), I happened upon an idea. Now we know it's pretty much been confirmed that we'll be seeing more of Luna (who wouldn't want to?), but I've been wondering how she will appear. And I came up with this: What if Luna is re-corrupted into Nightmare Moon? Now I know that she said in Luna Eclipsed that she couldn't be happier being normal again, but what if her resentment pops up again? Ponies still sleep through the night, after all. And if that is not possible, what if a new and/or returning villian tries to get Luna on his or her side? Like try getting Luna to feel her old feelings again to turn her against Celestia and the mane 6? Just some thoughts I had.