Is there a way to use additional macro icons?

There are the 7 tabs of DoW/DoM icons, and you can /micon for any actions for your current class/job and any cross class skills you have selected, does anyone know of any others?

What I specifically want is job (armor set) pictures. I want to be able to add in things like changing search comment, changing status, and showing/hiding hotbars based on job. The only problem is having an icon that is meaningful when swapping between disciple types, eg Black Mage icon while on Weaver.