@JeffPassan
Currently, teams can roster 180 domestic minor league players. The league is seeking the ability for the commissioner’s office to reduce it to “below 150" but could add to the number, too. Right now, sources said, two teams have fewer than 150 while five teams have more than 180.
While the MLBPA represents only major leaguers, it does bargain for a number of amateur/minor league issues. Among those: the draft. The union in July proposed a 20-round draft, something that the league accepted, one of the few points on which they've agreed during negotiations.