There is already a thread on this.

https://www.dcurbanmom.com/jforum/posts/list/1254498.page

Whats the deal with this MLS tier 2? Do current teams in MLS next stay in the top leauge? Looks like some ECNL and current MLS teams have thier second teams join? Seems like another way for clubs to charge more for a diluted brand of MLS"