CTRL+Click on an input is a great little tool to switch the input.
However, it only works when both inputs are wired. Often (, I or QD connected a wire wrong,) I feel like switching the input, before wire-ing the 2nd. Only to find it doesn't work...
Having to connect the 2nd wire just seems to disrupt the flow, being focused on the first input. Being forced to make things worse (connect two wrong wires) before being able to make it right just feels itchy to me.
It's a minor thing, but I never understood why it would be limited to 2 wires.