I have found myself in the situation a few times where I would like to insert a node right before or after a heavily wired node, or the heavily wired node has to be replaced with another node altogether.
Unless my search keywords are wrong, I can't seem to find any way of accomplishing this without having to reconnect all wires manually.
I imagine the ability to Ctrl+Click a node just as the canvas, or to avoid mistake Alt+Del a node and have the node selection menu drop down (allowing a change to another node with wires still attached).
Simplest use case for me would be to take multiple inputs to a node and re-connect them to a no-op node - which is what I often wish I had done to begin with.
I understand that I may be the only idiot who thinks this has merit , but why not ask?