Well there are other sports that are as odd as that version of Quddich which get taken seriously:
http://en.wikipedia.org/wiki/Curling
However I do tend to agree that petitioning the NCAA with this is kind of silly. It's right up there with Steven Colbert getting his name attached to things. The people who support stuff like this don't bother to think about whether they will still think it's funny in 15 years, or whether their great grandkids will still find it amusing to hear about "Space Station Colbert" or whatever.
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On the subject of Quidditch, I think it's a viable sport, sort of like Falcon Fighting (a fictitious Zero G sport for those familiar with it) but we just don't have practical access to the technology to make it work.
In the case of Quidditch, I actually think you could come up with something with similar functionality to the brooms, and even program a drone to act like the golden snitch if you wanted to invest millions of dollars in equipment per team. Before you start screaming about insanity with the brooms, I will say that I've seen enough "believe it or not" stuff on what we can actually do with Jet-Pack and hover technology to feel it should be possible, it's just those technologies aren't very cost effective (and regulation on a large scale is also an issue). Back during the priemiere for "Robocop 3" when it was coming out, they had a guy flying back and forth down the street on a real Jetpack in front of the theater for example (the Jet Pack being nothing like the one in the movie, or in general science fiction however) and that was quite a while ago.
The real reason why billionaire nerds aren't liable to ever find some way of doing this (even on a small scale) however is simply the lack of medical technology to deal with it. See, we can get people to fly around and swing clubs around and chase balls and stuff, but on the other hand when some dude falls off a flying platform doing 20 or 30 mph and slams into the ground 100' below, chances are they aren't going to survive it, even with immediate medical treatment. Stop and think about Harry Potter and the number of injuries Harry Suffered (and he was supposed to be an unusually skilled player). In real life it's not a matter of "hey you hit the ground at terminal velocity, drink this and you'll be fine in the morning".
Still, I have a feeling that at some point if we ever wind up with people operating in zero G in large numbers on a regular basis we'll see "Falcon Fighting". At some point I also have no doubts that someone will find a way of doing "Quiddich" since the books it's in have already hit a "timeless classics" level. Of course I think in the case of Quddich it will be mostly dependant on the development of something like oh... cellular regenerators, or reactive medical nanites.