Not being one to force people to write in POD, I wrote a SAX parser for Wiki-Text, and I spent a couple of hours tonight plugging it into the AxKit Wiki. In doing so I realised it would be just as easy to plug any old SAX parser in there. So I added support for ordinary XML while I was at it.
So now you can author in sdocbook, POD, or WikiText.
I've got lots still to do - preview, versioning, users, etc. But I feel like I'm making good progress.