I appreciate this topic was raised about 8 years ago, and to no avail, but perhaps it is worth revisiting.
In some projects I may have several Link Nodes which I label, for want of any other option, within the Flow with suitably named COMMENT nodes in order identify corresponding LINK In's and Out's. Sometimes there may me more than just a pair in the combination. It would be helpful if there were an option to display their ID Name/number in the flow or maybe better still to have a colour coordination of Link combinations to aid visualisation. I realise that selecting all of the flow will show up the linking wires and one can search for links within the flow, both of which are very useful, but my having to resort to naming them with COMMENT nodes is far from ideal.

