Since we already have a river to the right side of the screen why not add a way to create a river that bisects your land at start and end points you choose.
Bridges could act as a way for troops to cross quickly and enemy troops would have to fight to gain passage.
Enemy troops crossing the river would be slowed and the river could act as impassible terrain for siege units.
Buildings would remain unaffected by the river except for an art change and possibly add a minus damage modifier for troops trying to attack through a river.
Just a thought, let me know what you think.
Bridges could act as a way for troops to cross quickly and enemy troops would have to fight to gain passage.
Enemy troops crossing the river would be slowed and the river could act as impassible terrain for siege units.
Buildings would remain unaffected by the river except for an art change and possibly add a minus damage modifier for troops trying to attack through a river.
Just a thought, let me know what you think.