Who would you choose?
I.e. you could have the Nationals OD roster, and the Padres farm system
Or you could have the Jays OD roster, but the Cards farm system.
Think about a teams strengths and weaknesses. A team that might be losing a player in a few years to free agency, but has a player on the farm that could/would replace him in a year or two.
Personally. I think the Nationals or Angels OD roster, and no-homer, I would keep the Cardinals farm system.
Probably the Angels OD roster with the Cards farm if I was forced to choose.
Cards have more than enough arms to fill the holes the Angels rotation is going to have.
EDIT: If a player has MLB service, then they are on the teams MLB club, not the farm system for the sake of this discussion. So guys like Shelby Miller, Dyan Bundy etc are big leaguers.