Since there are some talks about migration from SVN anyway[1], I decided to unshelf my essay on this matter.[2] It discusses possible alternatives to Subversion and is in no way complete, everyone is invited to participate in drafting and discussing. Some sections need input of those who have practical experience with those systems, as for example I've never used Bazaar.
------ [1] http://www.mediawiki.org/w/index.php?curid=44222&diff=301482&oldid=3... [2] http://www.mediawiki.org/wiki/Source_control_considerations