I know that you will need to specify a center point but it will let you work better with radial distributed elements. X, Y and Z position could be replaced by R, Theta and Gamma; the same for scale. For rotation we will need to define a third angle to let the object rotate using a radial axis from the center of the polar transformation to the object).
I have notice the lack of this polar mode because I have been dealing with a radial design for months, and I notice that this addition to the boxedit command could speed up the process of design radial objects/buildings.
Thanks in advance.