Hexagons (dodekaedr?/ikosaedr? - hard to tell with this shading) create Circles (Spheres/Balls) in full movement line, seems kinda OP but if we keep that mechanic losing that piece seems to mean you lose because you can't regenerate (and the other guy can keep escaping across all map), unless they get killed one after another, as a trade-off.
Spreading nodes further from each other may make visibility a bit better. With that I would also make the shapes slightly bigger (but not too much because we will loose what we gained from moving things apart).
Few times I wanted to move, I click on unit successfully but it doesn't move because I click on a node that overlapped with the one I wanted to click. There is position display on hover but movement should... feel natural and not require me to make sure "Is this where I wanted to go?" with each step, colors help a bit but it's hard to tell what's closer and what's further.