As I posted about almost two years ago, the experiment in using a wiki to collaboratively annotate ancient texts was a flop. So, I'll be taking that down at the end of April of this year. In the meantime, I've been converting the better texts into the same format I use for Aoidoi.org. The results are somewhat more attractive than a web page, at least. I've managed to automate some of the conversion from Wiki (and my own Wiki annotation module) to LaTeX, but it still takes a certain amount of hand-holding.
Don't put data in to XML format unless you know you already have a way to extract it in a format you consider agreeable.
In any case, the better Wiki prose texts will end up on the new Scholiastae front page, and the few poems will go to Aoidoi.