
in this place where you give the value, you only can writte the number (or move the object with the mouse), well, in most softwares you have these little arrows to choose the value in real time, so, if you want more or less, you press the arrows for a while.
another thing about this. when you move the object with the mouse, you know wich is the value just when you finish the movement. well, i think we must know the value in real time, while the object is moving (or the camera, or anything wich uses this)
this are little things, but very important i believe.