
If you guys are interested in this idea, Ill go bake up a few copies in blender with much better rendering.
The refined Edges would give the game a better and more unique feel, allowing you to define depth and edges better, the game would look sharper, crisper, etc.
Some other examples from other games:
(Borderlands:)

Cel Shading is basically a distinct, black (or whatever color) line that runs across the edges of a mesh/voxel when it isn't obstructed.
TL;DR : Add cel shading into the game, it looks nice.