Attach a comment to wires

Being a neophyte here, my flows tend to resemble a rats nest, with liberal sprinkling of debug nodes and comments.

I would like to be able to drag a comment node to a wire and have that node “attach” to the wire.

Instead of this:
ha-feature-req

I would like to be able to attach the comment to a wire like this to make it clear where the comment applies:
ha-feature-req-480

The data, of course, would just pass through as if it were a wire.
As an enhancement, how about a switch? Instead of deleting the lines to test a flow, put a switch to “break” the connection. Like this:
ha-feature-req-sw-480

Please pardon the rough Photoshopped images.