Has anyone here played with one or more altered battlemaps in their vanilla M:TW?

I think I am going to try and change some of them for myself. The Friesland battlemap for instance does not exactly match the flat, swampy landscape as it used to be. A large part of Eastern Anatolia was (and is) much flatter (interspersed with mountain ranges) than the Anatolia battlemap makes us believe. Etcetera.

This question is not just for modders, hence its place in this forum.

Maybe we can exchange ideas, or even battlemap files?