Uh... the Fairy-type doesn't really fit in 1.8's type chart, you know.
Besides, there are very few fairies in Touhoumon to begin with: namely, Cirno forms, Daiyousei, both Lilies and the Three Fairies of Light.
I don't think a new typing'd be too exciting if it's limited to only those mons, really, and adding it to anything that's not a fairy (like Mystia) is just plain strange and inconsistent. I mean, why would Mystia be a Fairy-type at all? Just because Pokemon wants to make the Normal type less common?
Unlike in Pokemon, since Touhoumon features actual fairies, if the type happens to be implemented, everyone'll automatically associate it with them, and nobody else. And I don't think that association is wrong at all.