I don't think this is an urgent feature request, but I think it would be great to have some form of internal wiki support for repos.
The main option atm us to just have a docs folder and linking to the files in there, but I think a dedicated tab with some form of search would help improve the navigation and user experience. While I don't think it's 100% necessary to do so, standard.site integration would be cool to see and could also help to reduce the effort of creating new lexicons, while also allowing the option for having wikis available on other platforms/in other formats.
I assume it's probably planned to some degree already, but thought I'd make an issue as I hadn't seen one yet just so it can be tracked/discussed/etc more easily.