Never gonna happen
I see all these people talking about League of Legends is going to die soon because of Overwatch... I highly doubt Overwatch is going to kill league, Like sure a lot of people are going to play Overwatch but I don't see it lasting super long or being that big of a group that leave LoL completely. OW just seems super casual and like there is very little substance to it, That is one of the main reasons Call of Duty and other FPS games fell out of favor in the gaming community, the vast majority of less casual/ more experienced gamers like the meta and strategy behind MOBA games. I feel it will take another MOBA to kill league, or Riot would have to make drastic changes to the feel of League and make it no longer feel like LoL.