I like you way of thinking and research you did Roy. However it needs to be taken a step further. not only are the timezones not properly servicing the needs of he population, neither are the state boundaries.
Imagine:
North Queensland - Capital: Townsville. Cape York to Gladstone. No Daylight Saving.
South Queensland - Capital: Brisbane Gladstone to Coffs Harbour Daylight Saving.
New South Wales - Capital: Sydney (I would like to say Merimbula but it might undermine my case, but a nicer place than Sydney) :D Coffs Harbour to the existing Vic/NSW border. Daylight saving.
I was considering maybe including some of the southern parts of NSW in Victoria to make Victoria a bit bigger but I seen no sense in punishing them any more than they already are for living in NSW.
That would pretty much leave the majority of the population closer to their own capital city than what we have currently with Northern NSW residents living much closer to Brisbane than their own capital.
It would be common sense but it will never happen because the counter would have to be reset on State of Origin and there would be three teams to contest it each year.
Food for thought.
Doug