The argument is simple. If Australians want to sever the link with the British crown, that is their business via referendum or other mechanism. To end up with a president is weak and boring. A king is much more fun. Now the purpose of a king is to set style.
Style of clothing is superficial.
Style of living is going to be too radical or too conservative. So that leaves style of thinking. At this point I would put my credentials on the table. The style that I would promote would be thinking that is positive, constructive and creative. The millenium now ending has been obsessed with anlaysis and judgement.