yeah, it was more of a stylistic choice, both to reproduce some of the more vertical cliffs, like the lagazuoi (https://www.google.fi/search?q=funivia+lagazuoi&tbm=isch&tbo=u&source=univ&sa=X&ved=0CCYQsARqFQoTCJyXnp6hxMgCFUbXLAod4LAA1g&biw=1600&bih=736#imgrc=SegjuV3dH9YpWM%3A), and to force the players to make zigzagging roads, like real mountain roads.
I would like the possibility of making a difference in elevation of 6 steps between two adjacent corners (right now the limit is 5), with the catch that roads cannot be built on a slope of 6, and workers cannot climb it. that would still allow moving horizontally along the slope, and climbing it by taking detours, just like a real mountain road.
But I realize that it would require adding a lot of code, so it will likely remain a fond dream.
My hope would be to make a mostly to-scale 256x256 map of the area between Arabba, Cortina d'Ampezzo, and Alleghe, with a scale of 1 step for 200 meters of real distance and only some minor tweaking to make it playable and balanced; most real mountains are not so large that it would stop a couple of towers in the valleys from controlling the top, but i can use snow and immovable rocks to make it impassable. anyway, that's very ambitious and i have no idea if i will manage to go through with it.
EDIT: also, i see that some of the "debris" immovable are impassable, but unobtrusive enough that they can easily fit with a scenario of barren rocks so that i can cover a mountain with it without it looking bad