I hate to say it, but I think you'll have to edit them manually. As far as I know, adjusting the financial coefficient won't do what you're looking for, but that's the only major adjustment to the games financial system that I'm aware of. I didn't change or alter any player's salaries, just used CubbyFan's set, and built off of that. I adjusted teams finances, but not individual players. If you were really serious about it, you could divide the MLB up amongst owners of your league, and look at Cot's Baseball Contracts
, and split up the workload that way.