Started playing Rhun, real good map. Anyone who makes a map with navigable rivers is my hero. Being able to ship my men from my main production cities at the south shore of the Sea of Rhun all the way up to Celudin to battle Dale and Dwarves makes a nice logistic line and its fun to raid villages and exterminate them and disappear back into your ships. Though it would be nice if the river was just a bit wider, like one square wider so you could go around ports. I can understand an enemy port blocking you but not an allied port blocking you. Kinda takes away from the point of using the Celudin and Anduin as big watery highways. If an enemy (or neutral) has a ship in port, you'd still be blocked btw (or it would take you like 4 turn to get by it) and you would be forced to take the region or reach a diplomatic agreement. Vlad's submod for Rusichi Total War did something like that. I think what he actually did was make a small nudge on the river so that the end of the ports were square with the surrounding shore. IDK, you worked hard and might not wanna change it. Food for thought.