Well, I can see you aren't gonna make it easy. That's good, tho: tough competitors always bring out the best in everybunny.
So, kid: ever danced with the devil in the full moon light? 'Cuz I like break dancin' too...
We could start by establishing a few topics to choose from: Dancing, Combat, Dialogue Screens, Tales (or Tails) of Turner, Blood Baths, Funny, Weird, X-Rated, Impossible (kinda like wirework in a martial arts movie), Artistic, Creepy. Free-style, Glitch Exploitation, etc.
Make some suggestions and we'll define a list. You can even suggest a topic you don't think your competition can do yet (like Dialogue Screens: know how to mod those?), give 'em a chance to come up with something, and then drop the hammer you've got behind your back. But then you gotta share techniques (I wanna learn new stuff, too).
I'd restrict this to Data File changes (not interested in sound, frankly; only images) and Debug: no Map Editor except in specific, agreed upon topics. I think ME makes stuff too easy. You can fly, and your foes are frozen. But if ya got sumpin' special, make a case.
As for other rules, we'll use the same ones as in a knife fight: the only rule is there are no rules. But let's keep the trash talk light and humorous; I want a GIF contest, not a pissing contest. And only compliments (or light-hearted comments like, "That is one scary bunny ya got there"); no "Your GIFs suck, man. Check out a real bunny's work!"
Should we trade off goin' first and letting the other guy try to top it, or set a topic and both post at the same time? I have a certain advantage, since I've been doing this for a while.

I've got a file with over 100 GIFs, tho' not all high quality. The dance above was an avatar I considered to go with my Dancing sequence. But it's up to you as to whether that's an unfair advantage. In a duel, you get to name the place, but I get to name the weapons, but I don't want to handicap anybunny.
And we'll let the forum vote (or compete) if they want to. Or suggest topics (Does and Gentlebunnies, what topic would like to see our competitors tackle next?)
If this is too complex, or you don't feel like doing it any more, we can just post our stuff in the GIFs thread. But I think it'll be fun, and let us show off our stuff.
As for the Wiki, that seems kinda static to me. We could always post the best of the best there.
So,
...are we gonna do it? And what do the Admins say. And if it flies, do we start a new thread, or do they move this one?