Setting up AM as a mouseover macro improves its usability a lot.

I would suggest setting up Apocostasis and Eye for an Eye with <tt> then <t> macros, which is pretty standard for a BLM. You should already have Virus set up the same way on WHM/SCH.

Past that I'm not sure if I'd recommend any additional macros. Maybe the thunder 3/2/1 macro mentioned earlier, though I've found that it can be unreliable in consistently casting T3 when you should have the mana for it. I'm not a big fan of macro'ing a ton of on-GCD skills anyway, as I see too many bards gimping their dps this way already.