Answering the translator: Yes, it was a Chinese work hard translated into Japanese. The credits at the bottom tells the story: "Thanks Vhasu from the [...] fansub group for translation!"

Madoka should've REALLY wished that.

I've been thinking why wouldn't anyone make that wish already...

Because like Kyuube said, Urobuchi won't like it
He and Shinbo won't be able to slap each others face with all those profit money during beer party either