Here's the main issue: you're assuming you're going to have some kind of super-epic landscape whenever you quit. Truth be told, I quit more often then not in my house and other small, surrounded places; caves, trees, ect, and almost always standing on solid ground (bad for the directly downwards screenshot). It's not that I disagree with you in that it would be cool, it's that I think you're exaggerating how often it would look cool. Most of the time, the main menu would just end up being weird looking, generally cramped.
It was never mentioned you would always have a great landscape. The thing is: a forest or a house can still look interesting, and most of the time will, even if it's not a mountain range. And more, the point is to make it not dull, and I don't see why a forest (for example) wouldn't work for that, don't you think?