kibbles
Warlord
I like the idea of Victoria: Total War. Zulu Wars!!!
Something along the lines of keeping routes open and protected from enemy stacks? That would be interseting, although you'd need to implement some sort of limited-duration living-off-the-land potential to prevent it becoming too cumbersome, perhaps determined by the quality of farmland in the region? And I suppose raiding supply lines themselves should give you a bonus.I'd like to see a well implemented supply system. Not completely realistic, as that would be too complicated and I have no wish to deal with it, plus that is why you put other people in charge of things.
How about like each army sent out automatically gains a supply route from the closest available city with the closest route which would follow the shortest roads or sea routes. However, if you like, you can reposition the route manually so that you can avoid enemy military and force the route off road as to make it harder for enemy targets to block. The drawback is that your army moves slower and has less morale.
In your own lands, there is no supply route required, in Allied nations, you get a 50% supply boost (more speed, survive longer without supply, better morale)
You can also negotiate with other nations to use their cities as supply bases for long term targets. Cities used as a foreign supply base get a 10% boost in profits
Cities that had just been conquered (First 3-5 turns) cannot supply your troops. Unhappy Cities will not supply food and Blue faced cities supply less food.
You can also live off the land. Maybe your army gets destroyed in 2 turns in the desert and can survive indefinitely on the river Nile.
Perhaps some thing can be arranged where if a foreign army lives off your food, your city starts to lose health. This way, Armies will be forced out to fight in open field.
Perhaps there can be special Supply buildings that can be built that extents supply route.
Just throwing ideas.