Hi
Actually, This is an existing feature inside the NE Plus, (Embedded widgets)
But, I haven't used it in an actual node yet. Except inside some widget nodes.
Find "Widget/Widget Examples" node to see some examples of embedded widgets.
If you want to study the code, see the "EmbeddedWidgets.js" under "NodeEditorPlus\nodes\extensions"

Here is a quick attempt to add a toggle for enabling or disabling the output node.
I haven't tested it correctly, but, it seems to work ok.

Replace attached file with "objects.js" file in the "nodes" folder.
Let me know if you find it useful.