No new maps, just a new game mode... who is with me?

I hear a lot of people complaining about how the only good map is summoners rift. Well then, what if Riot made a new game mode on Summoners Rift where it is 8v8 or 10v10. Teamfights would be so much more interesting and new team comps would show up. Sure there are some cons like longer wait time or extreme lag, but I feel that this would be so worth it. Who is with me?

And Tell me why not if you disagree.