Forwarding on behalf of Jack, which is not subscribed:
Hi it's true that I created that fork of FCKeditor, but I'm afraid that I no longer maintain it. Tim Starling recently approached me with a FCKeditor-related question and I had to tell him the same thing. A WYSIWYG editor for MediaWiki seems to be nearly impossible to do, but the current best implementation is probably Wikia's RTE (Rich Text Editor, integration with CKeditor). Maybe the best idea would be to kill off our FCKeditor extension and try to collaborate with Wikia regarding their CKeditor integration extension. It certainly would be cool to have a good WYSIWYG editor for MediaWiki
one day...
Thanks and regards,
Jack Phoenix MediaWiki developer