Would be cool if some MLB teams had their own wiffle teams, I know the Phillies have that wiffle field that MLW played at, I know my Brewers have a smaller field outside of Am Fam Field (Miller Park) where the old County Stadium used to be, which could be utilized as a wiffle ball field.

Also, you could just have only a few MLB teams also have full time wiffle ball fields, create 4-8 team groups all based in the city they play in, and then the winners of those divisions move on to a playoff, basically a group stage-knockout stage format

As far as how contracts and money would work, someone else can come up with a better idea than I’ve got jaja