Also consider ;
* Time to command considerably better . ( DEP's joining mainline this year now may never get a command)
* More interesting destinations. ( certainly less hassle factor than AMS CDG FCO etc etc!)
* No stroppy bus drivers/cabin staff
* One set of cabin crew per tour . Ie better intergration and morale?
* Younger prettier cabin crew
* Flight crew don't get BASSA card (and finger) waved in their face if there is a requirement to go into discretion by 3 minutes.
* younger a/c with less ADD's
* a more "can do" attitude .. wheras mainline tends to be "can't do!"
And finally I guess that the whole atmsophere is a bit more positive. BA suffers from an attitude amongst its more senoir employess "that it is the worlds finest and can still teach other operators how things should be done". A pity eh?