However, one fact remains: TM always tackles point of interest
in their own way. What do I mean by this? They looked at the Greek gods...and made them robots. They looked at Attila the Hun...and made them Altera. The guy who made the first computer? LOL MECHA. I feel like people forget that even if TM does tackle a underrepresented Servant idea, it is not guaranteed they will do it "respectfully", as some might put it. I mean sometimes it does turn out well, like Mandricardo. And then sometimes you get Dobrynya Nikitich. Or Wu Zetian. Not saying that the latter two are done out of malice, but they are indeed not done in a way that I would imagine the people of their cultural spheres would like to see them.
It is perhaps because of this that I and others see TM not really tackling cultures such as those of Africa a blessing in disguise. Don't get me wrong, I'm sure most people would love to see it done well, but there is a not-zero-percent chance that it comes off as the most racist, offensive shit imaginable, whether it's intentional or not. I wouldn't put it past them, to be blunt.
Again, I also feel that maybe Nasu and co. simply don't have any interest/knowledge in those mythologies, or even the confidence to tackle them. Maybe it is even possible that they are aware of the rule of "not punching down" on smaller cultures that many other authors in a similar situation employ.
I do agree that for a franchise many would describe as celebrating humanity it is a bit unfortunate to focus on a some cultures much more than others and that focusing simply on their own home turf would be a waste of potential in adapting the many wonderful stories the world over has to tell. Ultimately, however that is how they always operated, doing things their own way. I myself have made peace with that. Perhaps the only reason why OG F/SN didn't have more JP servants is because Nasu at the time wanted to catch the attention of an all-Japanese audience, and later on when they got a sizeable audience he decided to focus on ideas about his own culture. Mayhaps we will never know.