There are already a lot of untold stories in the OUaT universe, I just don’t think that the place for all of them is on TV screen, not in the original show nor in a spin-off.
There are other medias to work with, why not make use of them? They actually already did a first step with the graphic novel (not with the book though, that was just retelling what happened on screen, I am not talking about the usual merchandise and franchise attempts).
Of course the original show has to stay the center of the universe, and the show should be still enjoyable if you just watch the show. What is important to advance the story of the show on screen has to be told there, but a lot of what fans consider interesting and even as important is not really important to move on the story on screen, sorry to the break the news. It can very well be told in other places, other media, without taking away from the show.
The experience for willing audience could be enriched by telling some of the background and off-screen things through other media, books, graphic novels, apps, games, wepisode, webcomics. OUaT is a family show, and though some of the new media stuff might be not so appealing to us older folks (to nurse prejudices), it quite sure is something to get younger people.
I am surprised that marketing and development folks at Disney are not already going crazy about the chances this new fictional universe offers them, or maybe they are but behind closed doors. I am aware that it takes some planning and a strategy, and that there is this kraken called international distribution and rights to be tamed, but it can be done. I liked what was done with Matrix for example, how they used games to explore characters or what they did with the animated Animatrix films. A recent example is the show Defiant. Or take a look at the collaboration between Cornelia Funke and Mirada Studios in creating the Mirrorworld.
This show could be so much more.
Of course they could leave it as well to fan fiction to fill the void. I wouldn’t mind, it is the companies’ loss.
Edit: Just remembered they had this app on Facebook, The Untold Stories. Wonder why they haven’t done anything alike again. Not counting though the little online game “Mirror, Mirror”. It’s a little fun but not really adding anything to the universe.
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