Had a trip that made the most sense to connect in IAH and thus I had my first CO experience in at least the last five years and thought I would share some things I noticed to see if it was SOP or perhaps just a poor initial experience.I had a four leg journey, the first on mainline UA, the middle two on CO express (which I will not really discuss as it was as expected/like UA express) and the final on CO. On the good side, while I did not get EUA I did appreciate the ability to check the upgrade status online. With that said, I think I hosed myself by booking on UA ticket stock and I don't think I was added to the upgrade list until I was checked in. In the end 13 people were cleared off the list before I think I was ever added and only a handful remained. I was number 3 there using my status matched CO Gold number and think I would have cleared if everything was more integrated. Not a big deal as I had row 21 on one of the 739s and one of only a few rows that still had an empty middle. I was excited to see what the entertainment options were as UA has nothing like it on their flights. The DirecTV was cool though as soon as I sat down and started to get comfortable I immeadiatly noticed that some moron designed the control unit as they didn't have any raised edges around it to stop you or a neighbor from inadvertantly pushing all the buttons. On a similar note, how cheap was CO to not include a map feature or any audio or anything free for that matter. However, what really turned me off on the flight was the attitude of the FAs. They just were not very happy to be there it seemed and this was epitomized by the closure of a curtain in the back galley. I don't really care too much if you are like the UA FAs and you decide to read a magazine after a couple drink services though closing the curtain like you could not be bothered to help out/serve the passengers really just gave me a bad message. At one point I walked back to throw away some trash and didn't realize they had hung a bag just behind the last row of seat and pushed back the curtain to throw it out and they ushered me back to the trash bag I missed. The other problem with the curtain being open is it really constricts people moving to the bathrooms or just getting up to stretch and the people who really suffer are those seated in the last few rows of the plane who have to be brush by everyone squeezing by each other.