Lore Group Game 3v3/5v5

I have had a running idea for a new game mode. Most all of the champions have lore that can match up or be similar to other champions. With these champions, you can create functioning 3s and 5s teams. The game mode I propose would have these similar champions in groups. -ex. Ashe Nunu Olaf or Karthus Amumu Thresh Hecarim Yorick- Players could vote for the group of champions in queue and would then use those champions. These groups can be very flexible of course. Whereas, the lore doesn't have to intertwine, the background of the champions may just be similar such as the previously proposed groups (i.e. Frost champions or Ghost champions). I think it sounds really fun, even if it just turns out to be a limited time game mode. I'm certain that the Riot team can put it together so it can all make background sense and function as a team. I'd appreciate your guys support, I really do think this would pretty awesome to play in. Thanks.