I don’t agree here. How would you manipulate the control points and other objects with that Gumball in a precise way? It’s mega inconvenient with the Rotate handles. You are forced to turn on the “Drag strength” mode first, then suffer from the fact that you may be forced to hold Ctrl or Alt (or both) keys to toggle the Ortho and Osnap (sometimes it’s useful to activate them, other times they must be deactivated), then maybe also toggle the GridSnap, then struggle with the limitation of “Drag strength” set to no less than a value of 1. 
Have you tried to rotate an object precisely with the Rotate handle set to “Drag strength” of 1? It’s still too fast, especially if you have to look at the whole object from a far distance. The same goes for the Move handle when you drag the Gumball from a far distance (the “drag strength” multiplies due to the view). The value must be 0,1 for more precision, but it’s impossible in the current Rhino.
A more elegant solution is to hover the mouse pointer over a Gumball handle, then wait for 500 ms (or any other customizable period of time), then a secondary handle will appear temporarily (or the existing handle will get a tiny icon next to it to notify the user about the activated drag strength), then you will be able to press it and it will move, rotate or scale at the desired “Drag strength” speed.