As far as I know, Themos has never released clear criteria for adding a new local board. This probably means that it's his personal assessment, I guess based on the activity, the number of local members and more.
If those be the criteria, I think Nigerians here have a pass mark. We beat some local board in terms of that. To be frank, giving Nigeria a local board even goes beyond the mere gesture of a local board. It transcends into continental which by extension will mean that Africa is now fully recognized on this forum.
Having said that, we should just continue enjoying the forum, discussing about Bitcoin and other whatnots, keep the local thread active and alive with quality discussions, bump our request once in a while and wait for a response, i believe we would get one somewhere along the line, i hope it would turn out to be a positive one.
But of course, we shall continue to do all that while watch paint dry so to say.