Google translates the question to: why stadium?
According to the developers the stadium was implemented during world cup 2014, mostly as a joke.
Now that it is there it has the same function as the other leagues, it's a possibility to win a trophy, mojo and money.
Plus as your girls gets better it's nice to have somewhere to put girls to work, rather than just letting them go.
And it's a "choose to enter" league, like all should be.
(yes admin, that is a hint!)
