[Wauthan]

It's a good idea. Atleast a few factions could have a supply type noncombatant unit. But wouldn't it be easier if it just appeared on the battlefield, right in the back? That way they would also be valid targets for the enemy that could make a quick harrasement attack just to take out your supplies.

Also the effects of starvation are not as harsh as one could imagine. Diseased units can Last for quite some time and are usually competent enough to fight even after a full year (4 turns) of starvation. If starving units actually died or had massive penalties then supply units would be much more important.