Well, Bacon did start doing Karma prizes last year for those who aren't prize eligible or who just want to go for the Karma.
But if we had a contest with just Karma prizes, that'd be fine. It honestly doesn't even need to be a full-blown contest. It can be something like the Top 10 Games mini-contest we had back in 2005.
--
http://img267.imageshack.us/img267/2369/mythbattlers.jpg
http://img.photobucket.com/albums/v516/Sensui22/1248835958206.png