While I'm really enjoying the new lore, I feel they don't answer a rather important question.

What draws all these champions to Summoner's Rift?

I remember in Nasus's and Renekton's old lore they talked about being part of the League was a major part of their lore. Nasus uses the league to try and kill Renekton, and Renekton uses it to experience death.

But now, while they have interesting backstories, I don't feel that the lore gives anyone a reason to be part of "The League of Legends"