have you ever compared mecator map with a globe or at least with an non mercator projection... have you ever seen the real distances of the world, lets say from kairo to johannesburg, or better from marocco to kairo? or as said before the unbelievable size of the pacific... from my point of especially for the WW2 area it matters, where distances like pacific were really a problem... especially for planes...
and also in africa or asia, the size of the sahara for example, nearly impossible to conquer...
on the other side, in africa, following correct shapes, so many more options are possible, more provinces for example... not for micro mgmt, but to simulate the giant efforts to control this continent...
for me, correct shapes and distances, accuracy matters, for strategy as well as for historic correctness as well as for atmospehre..