Originally Posted by star_world

These cramped seats pre-date the merger and it doesn't look like there is any plan to continue fitting them to other aircraft types. The newly refitted 767-300s are being fitted with 2-1-2 seating that is much more spacious: http://www.seatguru.com/airlines/Uni...767_300_ER.php

You will also find more roomy business class seating on the former CO 777s and 767-400ERs, so it may be worth looking at some of those flights in the future.