If I ran Transperth ... I'd lengthen off-peak services.

While most peak hour services are now six-car trains, trains at other times are still only 3 cars. I took the train today on the Joondalup Line, and the three car trains had some standing passengers on the journey in at about 1:30pm, and nearly full on the trip back at 5:15pm. Standing isn't necessarily a problem, while it can be inconvenient, it is a reality of public transport, and most cities with great public transport have lots of standing, because standing means the service is popular. However, during off-peak times like this plenty of spare sets are available to make six car services, and add more services if the six car sets are full. In fact, I think off-peak services should have been six-car before peak services, because we wouldn't need to add more train sets to our fleet.