Hrm. True. I believe some interest could be gained by appealing to the natural competitive nature of Arena fighters. Alternatively, the concept could merge with the Multiverse (if possible) for extra consistency and size? Just shooting in the dark here. This kind of things really do require numbers to work. 

For starters though, for competitive appeal; Guys. Girls. People. Citizens. Whatever you are. *Ehem* I´m going to conquer the shit out of this. All your base are belong to me. You have not experienced true terror until you´ve faced the strategic horror that is Green. Give up now and grant me victory by default, you´re doing yourselves a favor! Hahahahaha! 

...Too much? :O