regarding about point 3, recently I've seen a live-case...
Someone fainted in the train cabin so this guy went to press the
button (beside the door for emergency de)... At the next stop, SMRT
male staff came in, demanded to know what is happening (the guy
already told the driver b4 so the driver should have convey the
situation over to the station before hand so arrangement could be
made in advance)...
Next this male staff confronted the guy who pressed the button,
in a way machiam like u interogate a criminal suspect... I can
assure u, the male staff is very, very agitated -___- and he
didn't exactly try to help or understand the situation, more
like trying to find the problem, bring the problem out of the train
so the train can resume moving...
Not that his motive is wrong, but it's his way of handling
matter is rather of no compassion and he could have handled
the ground better...
suspects mrt staff could be underworld figures.