Combining some buttons into one

[SpiralMask]

I'm not sure how, because in all cases except Monk, all combo skills are on the GCD and can all be used when the GCD has completed.
If you macro combo skills 1, 2 and 3 to one button, then whatever skill is first in the list, is the skill that macro will use. You'll just be spamming 1 over and over.
And of course as I state above, Monk is the one job this unequivocally cannot work for.

at least for SMN, having dreadwyrm macro-swap to deathflare and back is safe enough given their longer cooldown and single use (and being on the ogcd), but the demi's and their finishers wouldnt work since you should be using the finisher twice during their duration. i'm sure there's a few other corner-cases that could work (requiescat -> confitieor?), but they're be jsut that--corner cases