Local space width and height in km instead of a ratio
Currently, the local space's width and height are represented as a float, with 1.0 being the default, meaning the space's width and height are analogous to the world's width and height. When someone wants to create a 3 by 7 km local space area, they now must calculate what the ratio of 8:3 and 7:8 is.
Instead, I think it'd be better if the user can directly set the width and height in km.