Only a suggestion
What would that improve?
Is only as reminder because the values can change across the masters.
But all you need to know is if your nodes are on the metrics or in the zone. And that is indicated with the node background.
Isn’t about the node position.
If I want to draw a rectangle Width 100 and the Small Caps height I don’t have a quick reference of this value. I know too that I can draw it dragging.
PS: Perhaps is a dumb requirement too.
This could also be done with a plugin as it is shown above, or alternatively a collapsible panel in the sidebar with a summary of the Metrics entries.