Hi Macs:
Request to add drawing an equal-sided cube (or maybe elongated one also?) from the center of the first mouse-click. If there was a way to alternate to starting from a corner that would be cool, but not essential.
And, since SU's rectangle tool doesn't have an option to create a rectangle from its center, this cube tool could also be used to do this by simply not moving the mouse along a third-axis for the 3rd mouse-click (or by double-clicking on the 2nd mouse-click).
Regards, John.