I know in retail a ton of people decided to make low lvl characters to do BGs in, so hey why not start a low lvl arena match? But that may just cause troubles dealing with donator gear... just a thought.

Another event that I think would be really fun is an all out war against horde/alliance that are all lvl 1. This is non geared, starting from scratch characters. You could call it the "Elephant and the mouse lvl 1 game" where alliance all rolls gnomes and horde rolls tauren or something, where its not all about the rupees but having fun.