If there was one aspect of our uniform that needed immediate change, I would say that it's our composite rank. Having to buy it by the roll and sew/staple/glue it together really cheapens the whole idea of wearing a uniform, in my opinion.
We should have proper ranks slide eppaulettes in the same way that the RN or RAAF have. That way, the actual rank would stand out far better and the army would have fewer excuses for not understanding our 'bar codes'.