Much like blender and sketchup, it would be nice to be able to enter exact dimensions or relating commands after a transform action. For example, if i move a face of an object in the x axis, I would like to be able to enter an exact dimension after the fact, instead of relying on snapping. So typing in 5 after moving an object would move it exactly 5 units in the direction we moved it. Likewise, if we moved an object 5 units (inches, feet, etc) and typed in x3, it would make 3 copies of that object each spaced 5 units apart. Typing in /5 would make 5 copies of that unit equally spaced within those 5 units (so 5 units 1 space apart).
I use that all the time in sketchup and it seems like such a simple thing but is a very helpful workflow improvement.