Definitely have a large Average Media Contract value and set Media Contract fixed? to No, based on team market size. Then, set the New York market to be Astronomical or Huge and the others as something less. I would not go too far down the market size scale for the others (maybe Average as the lowest, not Tiny or Insignificant) because the other teams may not be able to survive financially with too great a difference. Then have either No Cash Maximum or a very high amount for this.
Say, since I took no offense to your "Evil Empire" reference (I have become immune since my tender rookie days here), I will ask you the following:
You say, "---Yes, Matsuzaka is probably one of the best Japanese pitchers ever, but I'd take Okajima for my friend." Would you mind taking Igawa as well? I mean, taking him back for a cash refund?