Outside of the normal parameters I've found a nice one that allows the face of the macro to inherit the ability assigned.
Shows the GCD/timer/costs/etc. However, it doesn't inherit the tooltip. Does anyone know that command? /macrotooltip, /macrohelp, /macrotip doesn't work at all. If I can just get the tooltip comand I'll be incredibly happy so far with FFXIV's macro system.