Here's chapter 2 of my MGS5 fanart/redesign, the "red chapter".
It shows the dark side of Big Boss finally ramping up, and takes place in Mozambic, linking his backstory with (soon to be) Gray Fox's.
It also introduces Big Boss's final base: Outer Heaven, some kilometers away behind the border, in South Africa.
The map would have the same look than the Angola map from MGSV, though smaller as there are less missions in it.