They should release new versions of MKD with Shao Khan, Goro for Xbox, PS2 then offer $40 upgrade mail-in rebate, provided you have the proof of purchase (UPC, receipt) of MKD.
A lot of companies do this, u know. I think they should do the same thing with MKD.
Or, why not use Xbox Live to update it? Is it possible? It was stupid to not have this game download extras on Xbox.