I can't believe what I am hearing here. As there is no profit share anymore who cares about an economical operation and whining about the following.
Don't complain, ......that your life is made less stressful by carrying spare fuel on at least 50% of your flights (to protect the hub).
Don't complain that you have to fly fast so that you will be doing less airborne time when you are not getting paid more than block time anyway.
Don't complain about APU burn as the ground AC is poor anyway.
Don't complain about partial engine shutdown on taxi in as you should feel lucky it's not mandatory to single/twins 2/quads engine taxi out.
Just shut 1 or 2 down as the aircraft turns straight onto the stand, you still have momentum, no more turning and no CSR to fill in.