This used to exist in the Wiki Syntax, and may still exist...just not documented. You used to be able to do stuff like [Some Title] and it would create a link (assuming the same Community) and pass the contents as the default Title of the Document...and launch you straight into Edit Mode (if u had permissions). As this was a Wiki Syntax construct, it may have accidentally died, but I do know that the platform supports this quite well.
One area it may need improvement on is the "stubbing" out to other communities, I am not sure if the syntax I am recalling had a method for easily linking to other communities?
But definitely something that my company will be interested in, as we move forward there are at least 2 projects that I am aware of that will greatly benefit for this concept of "stubbing" or "future links". I honestly hope this hasn't fallen to the wayside.