[Proposal] Automatically swap inputs when possible

[fccDunce]

Feature/enhancement description:

Example - node with inputs 1 and 2 occupied by two connections. When user pulls out the input 1 wire and connects it into input 2, the connection from input 2 is automatically rewired to replace the one removed from input 1. (I find that this is often the desired result, but even if I'm wrong this can be limited to only happen while holding down a modifier key )

[RodZill4]

Hmm the only case I can think of where this would be desirable is the Blend node (to swap between foreground/background channels). But yes, it could be implemented with a modifier.