I believe you consider Muturzikin not a very reliable source.
The main issue (namely that local languages are deliberately favoured, even when their actual speakers constitute only a small minority nowadays) is actually not a problem for Africa: in virtually all cases, local languages remain in wider use.
Muturzikin maps have a few other issues, however. One of them is the frequent use of somewhat strange subdivisions (likely taken from inaccuate sources). When I look at the European map, I can see a lot of incorrect elements in the Low Countries, Germany, France etc. -- because I'm familiar with the actual situation there, I can tell where things are off. Typically, the map is
generally correct, but off in various little ways. (And old subdivisions are often used, based on categorisations that have been debunked.)
This is also not a major problem, because it appears that the base map Muturzikin used is actually the same map of Africa that I've found to be generally most accurate/useful. Its biggest drawback is very unclear colour coding, so I've actually overlaid the Muturzikin map to avoid mistakes.
The major problem - the reason why Muturzikin's map could only provide limited help - is that, there, too, the colour coding is random. What I really needed was a map that colour-coded largely similar languages together. Some languages within the same major group in the revised Guthrie classification can still be very different, while others are almost identical.
In the end, I have scoured various sources to find out which languages are most similar, and ended up grouping them together based on that. This was quite the job! But I believe I've largely succeeded. There are still a lot of debates on the proper classification of Bantu languages, so where conflicting views existed, I had to make a decision. I've opted first and foremost to try and avoid putting hostile groups together (for instance, there were two languages that are widely considered near-identical, but the speakers hate each other and deny it vehemently). Besides that, I've simply grouped them by similarity.
Also what about Kabylia? They wanted autonomy within Algeria, I am disappointed they didn't get it after all
You are quite right. I've taken special care to do more justice to the various Berber groups in the revised map below.
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This, incidentally, is pretty much my fnal proposal. But I remain open for suggestions! Have I missed some separatist movement? Is there a local conflict I'm not aware of? Let me know.
Considering the criticism regarding South Africa, I've taken special care to do some extra legwork in that department. Besides checking maps and percentage data, I've also attempted to look at population numbers on as detailed a scale as possible. This has led me to make some revisions, basically swapping some areas. The end result is that more speakers of Afrikaans and English end up in South Africa, while more speakers of various Bantu languages end up in one of the Bantu countries.
Overall, I remain of the opinion that my original estimates were correct: the South Africa I propose is going to have an overwhelming majority of Afrikaans-speakers. This does not mean that Afrikaand-speakers are a majority in every part of the country. In the near-entirety of the larger western provinces, they will be a vast majority. Contrarily, Afrikaans-speakers will be an absolute majority in about half of the more controversial eastern province. They will be a plurality in about another quarter, and a minority in the final quarter of that province. I've taken especial care to try and leave any major settlements out of such non-majority areas, with the result that population-wise, there will be fewer non-Afrikaans-speaking inhabitants in the end.
The changes I have made can be seen on the map below. Red areas are removed from South Africa and added to the various Bantu countries. Dark green areas are, conversely, added to South Africa.
Interestingly, I find the revised "eastern province" to be much more aesthetically pleasing, too. This is pure coincidence, and opinions on what looks good may well vary, but I consider it a nice bonus!
It's been a lot of fun working on this, despite running a fever all the while. Great thread,
@smjb! There have been lots of "better/ideal borders" threads, but as usual, Africa is too often ignored. Diving into the intricate division of this continent has been a fascinating experience.