West Africa seems to be churning out a bunch of fintech, not sure how formidable that will be. Also, rife with corruption and/or instability, especially the supposed giant with the loudest voice. The other regions of Africa may be more promising, but I don't think they have the same "bond" with the diaspora. No ill will, and not to start a diaspora war, but since you mentioned it, it's infuriating seeing other regions of the world develop and pursue 20 year- 40 year plans and force their collective will onto the world even against the western hegemony, and then seeing countries in Africa still dealing with matters from even back during their gaining of independence and still being exploited.
It would have been nice to have a few countries that the diaspora could seek refuge in a world that hates them. If nothing else, a powerful and respected Africa should translate to a powerful and respected diaspora.