[Regarding map layout...]

Are there any plans in place for more vertically-oriented maps? Currently, it seems that maps are generated solely along the horizontal plane. While I imagine this to be an efficient formula, it also feels limited and cramped; a few staircases leading to upper level or lower level rooms would be a little more interesting, especially if you can look down from a ledge or something and see the lower levels. Not to mention, the challenge of having to take or defend a high ground is always welcome.