This may seem an odd request. I've had a quick look through and not seen anything like it, and I'm not completely sure this is the right place.
One thing that bugs me about Civ 4 (and there aren't many things that bug me, to be honest) is the culture overlay on the mini world map. In civ 3 I liked the way culture influenced your borders and it was very clear on the world map, unlike in civ 2 sometimes. But in 4, culture overlay goes over the water as well as over the land, meaning that on anything larger than, say, Medium/Standard sized maps it's virtually impossible to tell where the land ends and sea begins, without actually looking at the area on the main screen.
What I'd love is if it could be made that culture overlay ONLY shows on land tiles on the minimap. I have no problem with it being over water on the main map, it's just the mini-map that bothers me.
Anyone know if this can be done? I do apologise if I've missed something obvious here...