I would just wish all companies has the same size for carry on's... It annoys me that I can take a bag along in one carrier, but in another I cannot....
In the end, if they'd just improve the time is takes for luggage to go from aircraft to band, I'd never carry anything into the aircraft.... and save them the time I have to spend putting my carry on in the overhead bin.
There must be an easier way of handling luggage...