I use Keyboard Commands a lot.

Why do you refuse to allow me the option of having C (circle) default to Diameter instead of Radius?

I can list 10,000 components & features that are described, stocked, sold & bought by Diameter.

I can think of zero components that are described, stocked, sold & bought by Radius.

I realize I can program an Icon for this, but I use the Keyboard. 

I make hundreds of circles each day.

It is seriously annoying to have to press D each time.