I understand your frustration. Open source is a tough racket — my current employer doesn’t need this functionality, so I’m not able to work on this during work hours, and at the moment my side project plate is also full.
Patches (or pull requests via GitHub) are always welcome.
That is understandable. I just dont want to use the one WPMUDEV made (which is really good) as I like WordPress Wiki better. I hope you can update a few things soon. Thanks!
What in particular needs an update? Whatever was going on with WordPress 3.4.2 was resolved with the 3.5 update, and everything seemed to work in my last test.