Actually Ascendency had a true-3d system map, which was a decent reason to have 3D. And SEV has far more on screen at once in '3d' mode than it would in 2d (switch to top-down mode and note how much farther you have to zoom out to see all the hexes).
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Phoenix-D
I am not senile. I just talk to myself because the rest of you don't provide adequate conversation.
-Digger