Howdy o/
Please check out this post from Sam Goto (Google/Schema.org)
http://blog.sgo.to/2015/09/vocabulary-negotiation.html
I though in similar direction for some time now and very much appreciate
that he wrote about such idea!
This could possibly help us with no getting stuck in ActivityStreams vs.
Microformats vs. Schema.org vs. FOAF+SIOC+CCO+GoodRelations+... arguments...
You can find in that post replay from leading thinker in field of
Hypermedia - Mike Amundsen - and another reply on G+ from Ruben Verborgh
leading work on Linked Data Fragments (also hypermedia based)
https://plus.google.com/+SamuelGoto/posts/WKgs5J5UXz9
Cheers!