That’s some great info to start with. We’re specifically wanting to have it be automatic, rather than something each post would have to opt into so I’m not sure if bbcode specifically will be necessary but I suppose if we had a thing that automatically generated it when rendering posts, that could work. I’ll definitely look into your suggestions. Thanks!
To give you a bit more context, it’s for Neurocracy, and our Discourse is at talk.omnipedia.app where you can see the Speculation category that has sub-categories for each in-universe date. Our community naturally fell into roleplaying as users of our future wiki debating the various twists and turns.