+1
You could argue it kind of works in Grades. You can copy paste a single corrector node or OFX node. You can middle click another clip to fully import it's node tree on the current clip or you can drag grades from the stills library or inspect it to take individual nodes from it.
But my biggest annoyance is the absence of copying multiple selected nodes and pasting in another clip. I don't understand why this doesn't exist. It's super easy to implement.
1. If selected nodes connect to each other uninterrupted: paste the whole selection including it's links.
2. If selected nodes are interrupted by nodes outside selection paste them all but only append the first node from the selection up to where it broke and let the user hook the remaining up where they need them.