We need a blank dimension file in minecraft. What do I mean by that? Right now its hard for map makers to simulate going to new areas (like the moon). The easiest way is to custom build a small chunk miles away only accessible through teleportation. Or to just cannibalize a pre-existing dimension. But this isn't what map makers have in mind when they make maps like this. We need a blank dimension that can be accessed through commands with tools, similar to java's flat world settings, that help customize the dimension. This would allow map makers to add custom infinite dimensions without sacrificing the pre-existing dimensions we all know and love.
Its a simple addition in theory but would add a plethora of custom content for the community to mess around with.
Don't forget to Vote to see a Blank Dimension implemented in a future update! Map Makers will thank and reward you! #TheMoon anyone?