You don't necesarily need maps created specially for this purpose. You can always use some maps you already have for individual maps. I don't recommend mass distribution of modded maps using terrain created by other people without there permission, but you can do private games with your friends. Some maps with notable terrain - Tormented Souls RP, Islands RP (several RP maps have cool terrain), FMVH is good if you want a map with lots of small villages, LOTR is nice if you want do you a Middle Earth scenario. Link to the Past CTF and Zelda Open RPG are cool if you want some Zelda scenario. There are lots of maps floating around that you can use in your private games, so that can be a good option. | 
