That's not going to happen unfortunately, I have quite a few other things I am working on which keep me quite busy. It's not quite the same, but you could check out my ongoing Broken Chains project ( https://basstabs.itch.io/broken-chains ). It might be something you're interested in.
I don't think I can. The game is hosted on Itch's servers, which as far as I know I can't store any user-generated data there.
That being said, I did upload an offline version that you and others can download which will allow you to download other people's stories and play them that way if people want to make some.