No mate, thats the right thing.
Currently on YM-ECBOT the commission is $2.40 per contract, the same as GLOBEX. In Jan04, the commission falls to $2.06 per contract, making it $4.12 per trade (I thought it was around 2.08 but I havent looked lately). With one tick being $5, you can be in a tiny profit at entry+1 tick.
Dont know if the GLOBEX rates will drop as well - IB havent said anything on Elite Trader about it yet. If the exchange drop the rates then IB will no doubt pass the savings on.