I think country lists in the wiki need systematic editing. Some countries, even ones with large articles, are missing from some lists. Some existing flags do not have templates, or the templates are not linked correctly.
I suspect some users don't find or don't understand this instruction (it also seems to be located in a strange place, although linked form the help page): http://wiki.opengeofiction.net/wiki/index.php/Talk:Portal:Lists
It would be awesome if some experienced users who are familiar with the wiki content could occationally browse through pages like "List of countries", "Uletha", "Archanta" etc, to keep them up-to-date. I made a few updates myself, but there seems to be a lot to do, and I'm not sure I have found all the lists yet.