If you haven't played Unity of Command, I would highly suggest it, as it utilizes some interesting game mechanics. Roads are crucial to supplying units, and the further from main roads that a unit travels, the less likely it will be supplied.

As seen above. A road network maintains a full supply. Each hex off road will display its supply status. Once a unit goes beyond the # hexes it will be out of supply and suffer.
I think this concept would work well in PzC and would love to see it implemented in 2.0


