I am an English teacher in the Netherlands and I have often wondered how to integrate my hobby of playing RPG's/storytelling into my lessons. I have used Atlas Games' Once Upon a Time to great effect, but that's where my experiments stopped, mainly due to time constraints. However, I see possibilities for Storium to play a role in and outside of my classroom.
Maybe you could partner with a publisher of TEFL material, maybe a group of TEFL-teachers could help with working this out, but please seriously consider this option for future development.