well, here's my concrete use case::
My "fediverse logo" thing is an outgrowth of a music tool I've been working on for a while (in-development screenshot below, not finished UI, etc etc). It attempts to identify links to audio from statuses (currently pulls from hashtags and groups using the Mastodon v1 and GS StatusNet APIs). I would like it to have an icon.
So far, I think this software is general enough that the idea could be extended to many different implementations of communication software, but I really don't know how to distill that idea into an icon. https://sdfn-01.ninjawedding.org/media/LvXm4Ut6i5rghxPyM48