The popularity of Lauren Faust's My Little Pony: Friendship Is Magic has taken the Internet by surprise - with a huge Periphery Demographic and a very active community, it is, after only one season, already one of the most successful shows in Western Animation in recent years. Not bad, especially given that the previous incarnation of the ponies could have easily been a Franchise Killer. But what is it that made the show so successful? Let's try to figure that out. (And while you're at it, be sure to check out Write A Story.)
Choices, ChoicesLauren Faust set the show in a world that was vastly different from our own, with a cast of Ridiculously Cute Critters. That approach certainly paid off, with a rich world that drives endless fan speculation, and adorable character designs. In theory, though, much of the character dynamics could have worked with a human cast (and "humanized" fanart is quite abundant!). You may consider that the alternate setting offers too many opportunities not to be used, but it is not mandatory...and if you do choose to create a world for it, remember that MLP:FIM benefited from surprisingly rich World Building. Also note that in Equestria, friendship is magic. The Power of Friendship proves capable of defeating Nightmare Moon. Now, having love and friendship as an actual magical force has worked well here, and in other stories...but it also possible to write The Power of Friendship as an entirely mundane yet powerful force, whether or not the setting has magic in it. Perhaps more important is core cast. MLP:FIM has a core cast of six (seven with Spike), each of whom had been designed to exemplify something the little girls in the audience could grow up to be. This arranged provided a rich array of personalities, and allowed the story to play with the personal dynamics between them. Do you want a smaller cast, leaving more time to develop each member? Go the other way around, make a large Ensemble Cast (and hope you can develop them all)? Can you make each one of them interesting in their own right? Given their personalities, how can each of them interact with the others - and can those relationships evolve?
PitfallsCharacter development will almost inevitably mean the characters will learn from the events of the episodes. While you don't have to turn it into An Aesop, be wary of Aesop Amnesia - if Twilight had learned the importance of friendship in the pilot only to need to learn it again and again every five episodes, it would have gotten frustrating fast. Another thing to remember is that My Little Pony achieved much of its surprising popularity by being one of the most positive shows on television at the time. Cynicism doesn't always sell, and a positive show doesn't need to be shallow or naive.
Suggested Themes and AesopsAesops: Try to subvert the morals you set up, and make them something unexpected from the norm. For example, in the episode Griffon The Brush Off, the moral seems to be set up as "a prank is only funny when everyone's laughing", but goes an inch further into a more general aesop, "a good friend will help you grow; recognize a bad friend and let go of people who only bring you down." So, if you were making a "face your fears" aesop, you could go an inch further into the friendship territory and say "even if you're scared, your friends will help you overcome them, and encourage you to face them on your own." You could even throw a tired aesop for a total loop. For example, take the Be Yourself aesop and do something original with it. A character, Bob, could be expecting his friends to do things because of what he knows about them. His expectations of his own friends fall short, creating conflict when he tries to force them to act a certain way. By the end, Bob will learn the same Be Yourself aesop... as applied to his treatment of other people. "Let other people be themselves". Aesops like these will help keep your audience learning about new things, which is part of what Friendship is Magic is all about.
Potential MotifsDue to being an existing franchise before this iteration, the chosen motif for this show is that most of the main characters are brightly colored magical ponies. Therefore, it is only natural that the setting would be tailor-made for such characters, which for them, is a Sugar Bowl-esque setting. However, it should be noted that it does not mean that everything in the world should be diabetes-inducing. Elements such as The Everfree Forest and characters like Discord offer a sharp contrast to the general cuteness that is often presented. In short, easily mistaken to be aggressively cheerful. Another thing to note is the tongue-in-cheek humor that is applied to the setting. It can be thought of as similar to Futurama, but in a Magical Land fantasy setting rather then a Science Fiction setting. Another important motif to consider is the constant use of Furry Reminders. What sets this show, and the franchise as a whole, apart from other girl's toys is that they really are ponies, not human beings in pony costumes. This was probably one of the biggest faults of G3 and G3.5 since Hasbro was practically ignoring what made My Little Pony unique as a toyline. Thus, it is made very clear that the pony characters are ponies by the fact that they remain quadrupedal while walking and often use their mouths as hands since their forelegs are occupied by being... well, legs. However, this is forgone if it becomes awkward for a character to be speaking while holding something, so this particular rule can be ignored if necessary. However, when making your own version, your own characters may not even need to be ponies in particular. What is stopping you from making a show where the characters are say... monkeys? penguins? turtles? actual people? the possibilities are actually endless.
Set Designer / Location Scout
The Epic Fails
Proceed With Caution