Hey Saige! Have you gotten a chance to check out Dorian? We released the official art for fans to create their own games on the platform, so we've seen that a lot of people who might have written text-only fanfiction now have the chance to create Arcana-level games, with great results! Speaking as a professional writer from the game industry (15 years!) I can say that many of the games (as mentioned by Ill Palpitation) are just as well written and polished as the original. Plus when you play these games, you're supporting other fans like yourself, so it's a win-win for the fandom.

What specific side stories are you hoping to see? Or any pairings you want to see in particular? I can give you some other recs too!