I wouldn't necessarily be dissappointed, but it would really screw over a lot of games. I mean, how would EA like to advertise "Tiger Woods 2010 with Motion Plus, but try it out this Christmas!"
I really think at this point Nintendo is practically obligated to release the add-on on time, the amount of 3rd-party support this is getting already forces their hand, lest they wish to piss off 3rd parties (which Nintendo has never been afraid to do, but in this case its a feature that the game has been developed around, yanked away)

Monster Hunter: pissing me off since 2010.







