Possible New Game Mode

Has RIot made any plans to expand the arena size of game modes, including more summoners per game? Hexakill was fun, but with the rising amount of players worldwide, it seems the game can support a massive arena. More champions on a bigger arena with added terrain features not seen before (high/low points, different hiding places, etc. ) could increase difficulty and overall amount of entertainment. It would open the game up completely; giving the weak a chance to fail and grow along multiple other players just like them on the same battlefield, while allowing the strong to shine for their skill as they turn the tides of an immense battle.