FFA mode? Wouldn't that be interesting, eh??

So I was in a Skype call with a few friends and we got to talking about new stuff with league and all of the sudden, he says what if there were a Free For All mode. I instantly sought to make this thread and am hoping a riot correspondent can answer this question... Is a Free For All mode possible in LoL?? Also for anyone viewing the thread feel free to take part in the poll on war of the juggernauts or comment any matchups for the mode :D