I don't like the idea of a default server, because someday it will be the wrong one.
Much like recommending Linux I'm sure to specify "Linux Mint" and when I recommend XMPP I'm sure to specify jabber.org.
But it sounds like we could just be pointing newbies to Voyager or Piefed for awhile? I like various apps having a default, because we can always start recommending different app, if there's issues.
