Release something like NBA 2K's Greatness program (granted some people flew through that), a long grind that you do as you play the game, and unlock cards along the way.
The 2K parallel I would like to draw here is domination.
Almost every season launches with this, its a big grind with some optional challenges that provides good rewards and great xp towards the battle pass.
Yeah Domination is great. They just need to release another WNBA one.
There are some things that SDS should copy from 2K like Domination, the Greatness program, being able to favorite cards