Why didn't they use SRV[1] records in DNS to resolve http2 requests? It has so many advantages:

  * Permitted at the domain apex (yes really! unlike CNAMEs!)
  * Allow weighted round-robin
  * Allows lower-priority fallback services
  * Unusual port numbers no longer required in URIs
  * Doesn't get confused with non-HTTP services located at the same FQDN.

It's the modern way to federate services! And there's very wide DNS server support - everything from BIND to Active Directory.

Fortunately the standard (nor as far as I can see, the normative references) doesn't actually say you have to use an A-type record. Unfortunately that will remain the convention unless someone makes this easy but explicit change.

I'd get involved but I fear the politics. Would I have any chance of being able to advocate for this change?

[1] http://en.wikipedia.org/wiki/SRV_record