[HoneyBadger]

It would be nice if water-breathers could move through river-squares, possibly making rivers separate from the rest of a province, or be their own separate province. It should be noted that rivers, especially in myth, tend to have their own separate distinction from surrounding lands. Besides, it would be fun to send a raiding party up a river to attack an enemy capital. Not so much fun for you, when independent pirates or vikings do the same to your capital. I don't think there's an ability in the game that gives a special bonus for traveling in lands with rivers, but there are for swamps, deserts, and the like. If you've ever hiked or spent a lot of time walking along a river like I have, you'll know that the terrain a lot different from a plain or a forest or a hill. Swamps are close, but not all that close, about as different as grassland and desert. Fighting on or across a river would be a lot different too, and ancient generals seem to have taken rivers very seriously. Mythologically, the undead have a lot of trouble with running water, so do evil witches, and not just in Oz-for a good example of this, and a really nasty witch, try Stoneskin's Revenge, by Tom Deitz. There are the Greek river gods, not to mention crocodiles which play a huge role in myths. And ofcourse rivers such as the Nile and the river Styx. The Grand Canyon started out as a river, after all. Because of all these things and more, I think rivers deserve a place of honor in the game.