Ok heres an idea ive always wanted to see.
Zsphere Size,Move,Rotate Slider — after you draw out the Zsphere.
So Zsphere is already laid out and I click on it and type in size of say 20.
This way you could have serveral Zspheres with all the same size after the fact;)
Im thinking somthing like the deformation sliders for move and rotate where you can click the little XYZ to make changes.
The Rotate with a mouse has never been easy because you just look at it wrong and it rotates -100000000000 degrees in the wrong direction