For the first time I tried to mod MTW and what I maded... First, the gameplay map can be larger but we need to move every city and every border and even re-shape it to match the new map. I believe that the borders are objects with...sprites maybe and the mini map must be changed:
Anyway I designed new campaign map with revamped textures to looks more like a old map:
I can make different versions if you want but for now I just need to hear your opinion about it.