My suggestion:
- Let NVA/VC team choose tunnel network with a vote or randomize it
- For Vietnamese team this is visible in map, US team not, until they discover it
- Multiple different variations in tunnel entrance locations + crossings
This would give NVA the realistic advantage of knowing the area. Make a lot of variations and combinations for entrances too, so that US team never can know certainly where the tunnels/camouflaged entrance holes are, until they actually see it.
- Let NVA/VC team choose tunnel network with a vote or randomize it
- For Vietnamese team this is visible in map, US team not, until they discover it
- Multiple different variations in tunnel entrance locations + crossings
This would give NVA the realistic advantage of knowing the area. Make a lot of variations and combinations for entrances too, so that US team never can know certainly where the tunnels/camouflaged entrance holes are, until they actually see it.