I'm one for keeping the date, or if not ditching the holiday all together. It's become so political now that moving the date will change nothing.
On a side note, did anyone read in The Australian about an 8 year old Aboriginal boy committed suicide recently in the Northern Territory? Solving the problems that cause 8 year old children to think that suicide was their only option might be an area people, and governments, could channel their anger toward rather than this crap. It makes me so mad that so much energy is expelled on things that don't matter when the things that do are not paid one iota of attention.