Idea: extensible redirects.
The [[agora]] already redirects https://anagora.org/go/foo to the URL labelled with [[go]] in https://anagora.org/node/foo.
The proposal is that it should do this for any block with a URL. E.g.: anagora.org/garden/flancian should redirect to https://github.com/flancian/garden as per the content of anagora.org/node/flancian.
Extension to this extension: if the argument (object to the predicate) in the block is not a URL, a hook can be registered to process the action.