Do you think, it would be possible to make this mod more optional?
I would like to use it, but don`t want to replace existing files...
Well, just back them up. After all it's the same map, so there's no way to have the cake and eat it.
What we could do is to make a
new UFO which would use this map and remove the original one from the game, but that's unnecessary work. Besides, completely removing a UFO from alien missions causes weird problems.