my suggestion re: using git wiki was more to address the inefficiency of editing markdown on discourse (as a side note, a plugin could help but this could have a negative impact on maintainability of the forum). for a list like this you really want it to be easily editable, otherwise it’ll be hard to encourage people to keep it up to date.
this is also where i think clarifying the purpose of the list would help - at what point does it get updated? by whom? another thing to consider - putting your name on the list might feel like committing to completing a feature, which could actually discourage new devs. perhaps we should clarify this is not the case, and putting your name up just means you’re going to try working on something, with no expectations/obligations attached to it.
to me the main benefit of the list is to have a central place to check the status of requests, less so to coordinate who’s working on what - we don’t really have that many devs working on monome eurorack firmware.