Oh, oh yay, Out of Bounds. I LOVE that story. I have actually dreamt about Rodney McKay making spaghetti because of that story. (No figure skating dreams yet. No, no idea why.)
And regarding non-sports alternate-fandom AUs- there are plenty! I've written two- one is choral singing (http://archiveofourown.org/works/27857) McShep and one is animal-transformation (http://archiveofourown.org/works/11358) (yes, you can be fannish about animals) McShep. And there's an excellent marching band McShep I could find for you if you wanted- I don't know why bands are always so much more popular to write AUs about than choirs. And when it comes to the Newsies fandom- we have mafia AUs, and band AUs, and cowboy AUs, and pirate AUs, and camp AUs... more AUs than canon-based, probably, by this point.
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And regarding non-sports alternate-fandom AUs- there are plenty! I've written two- one is choral singing (http://archiveofourown.org/works/27857) McShep and one is animal-transformation (http://archiveofourown.org/works/11358) (yes, you can be fannish about animals) McShep. And there's an excellent marching band McShep I could find for you if you wanted- I don't know why bands are always so much more popular to write AUs about than choirs. And when it comes to the Newsies fandom- we have mafia AUs, and band AUs, and cowboy AUs, and pirate AUs, and camp AUs... more AUs than canon-based, probably, by this point.