I know short units double the fleet maintenence intervals but it
shouldn't be at passenger detriment. Footy demand is easily planned
and addressed but better would be make them all 8's off peak and
weekends.

At off-peak times, shorter trains make women and others safer from crime.

Then the rail company need to put security guards on the trains, it's not
an answer to run short (packed) trains to make people feel safer.

D