So, let's take the shippers on deck

And put them to work. Lets say some of your favorite ships {Garen x Katarina, Mordekaiser x Sona, Zed x Syndra, etc.} have a kid(s), those kids end up becoming League champions.

What would their gimmicks be? Their appearance? Their attitudes? Their kits? Their relationship with their parents? Their relationships with their parents friends, rivals, and enemies? Etc.

Official pairings, unofficial pairings, headcanon pairings, crack pairings, everything is on the board. Also, if they can't have kids the regular way, adopt or get a foster parent to help make the kid. Or create a robot one or an artificial being, we have scientists and mages in the League after all!