ファン fiction idea! Opinions?

I've been doing some thinking. Ever since my old 記事 Of Land, Spirit, and Stars came to a stop, I've wanted to write something completely new. Now, I have an idea for an article, and I just wanted to get your opinions.

In an unexplored part of Equestria, there live ponies that are completely secluded from the world outside their borders, and somewhat secluded within them, too. The land is ruled によって a monarch who has only one law: Once a ポニー has their cutie mark, then they can only interact with ponies (besides their family) that have similar talents to their own. This way, order could be maintained. This is the only way of life that they have ever known. However, when the ponies are threatened によって an outside force, they must abandon this rule, and 登録する together.
(I hope I explained that well. I'm not too good at explanations または summarizing. XP)