I have written voluminously on CO's inadequate coach, especially on long flights. To me transcon in CO's coach is simply dreadful. Inadequate legroom, rock-hard thin seats. Only two lavatories for as many as 141 passengers and 2 f/a's on the 737-800 which mainly fly these routes. Mediocre IFE on screens which are often not working properly.
Then there are the little things. Those little boxes for the IFE at your feet that further restrict your legroom. If the person in front of you reclines their seat you cannoty work on your laptop.
As has been pointed out here, CO clearly has the worst transcon coach product of any airline. Not only is B6 far more comfortable, but other traditional airlines such as AA, DL, and UA all have a better transcon product as well. And, amazingly, CO rarely has the lowest fares. Often they are exorbirtantly expensive.
I think it's pretty galling to be sitting in this despicably uncomfortable cabin, listening to Larry Kellner lecture us in his video how much better CO's product is. Perhaps, in the interest of decency, Larry should record a different version of the video that could be played to the coach cabin separately.
Finally, many of us CO elites used to do OK because we could get upgrades on these flights. But CO also has the smallest FC cabins of any carrier flying transcon and so it's no wonder that upgrades are so hard to score.
CO is not going to change this, as others have noted. Then again many of us have already taken our business elsewhere, so they may eventually feel the need to upgrade the product.
Then again, if you think transcons on CO are bad, try their EWR-HKG. That's 16 hours with the same 31" of seat pitch and rock-hard seat. Cruel and unusual punshment...