In a fantastic piece on The Athletic by Paul Tenorio about Homegrown players being as important as Designated Players in the future, Paul dropped this nugget.
“[The league] is weighing other changes that are necessary to accelerate the league’s growth,” Tenorio started. “Among those is significantly altering the salary budgets—many GMs would like to see the number triple, at least—and potentially increasing the size of both the senior and reserve rosters.”
Significantly altering the salary budgets. The 2019 MLS Salary Budget is $4,240,000. At least tripling it would get the budget to nearly $13 million.