There's the potential risk that the interim GM makes short-sighted moves in an effort to impress his bosses with a meaningless W/L record. It may not make a difference to the Ricketts, but it might and that may be enough for an interim to buy instead of sell at the deadline. I'm not one for firing Hendry but given that TR highly values the farm system (as assets) there is no reason that he couldn't merely say to any interim guy, "Don't go selling the farm to try to impress me--it will do the opposite." Simple as that. That or he could just say that he wants final approval on all trades.