I know you've specifically asked for Aussie Scooter suggestions but I couldn't miss this opportunity to request a decal option for an A-4K with the 'European I' camouflage scheme in 1/32 scale. Gekko Graphics produced a very popular sheet which included options in this scheme, but never in 1/32 scale! I'm sure a 1/32 scale Anzac A-4's decal sheet would sell like hot cakes! This is the scheme I'm talking about:
http://hyperscale.com/features/2002/a4kbg_1.htm