The Holy Father can appoint a Vicar General for all seminaries, colleges, and schools, who only reports to the Pope and has all the power he needs to clean house. Short of that the foxes in miters are not to be trusted with the henhouse.
Sad to say, I doubt whether such a Vicar General would be any more influential on the rogue American Catholic Church than was the Apostolic Constitution Ex Corde Ecclesiae on "Catholic" colleges and universities.
By the way, I'm hearing that Francis Cardinal George's major seminary in Mundelein is an outpost of the Lavender Mafia. If so, that's a huge problem, since that seminary serves multiple dioceses, if I'm not mistaken.