I agree that regular rows in CO coach are horrible, not only because of the 31" pitch but mainly because of the lack of adequate seat padding. But there's not a snowball's chance in h*** that CO is going to overhall the entire coach product even remotely soon. It would cost a fortune at a time when the carrier has just returned to profitability. Heck, they take new deliveries every year and they have the exact same uncomfortable coach seats as the rest of the fleet. The only exceptions are the 753s with the slightly more comfortable coach seats and 32" pitch (like the 767s).