NEW GAME MODE: Havoc
The map is SR, but the gametype is random... for each team. One team could be doing hexakill while the other plays as Doombots. One team could be playing a nerfed version of URF while the other team is playing All-for-One. The way it works is you choose the mode and you're put in queue for one of these types with 4 (or 5 if hexakill) other players, like how teambuilder does. Then your team is put into a larger queue and matched with another team also doing a random game mode. that way neither team gets a chance to pick champs, runes, or masteries to combat the other team's game mode, they have to wing it. There's also a chance for an Ascended to spawn for the teams to fight over at random times in the game.
Thoughts? And yes I know this would be really complicated to implement, but where there's a will there's a way.