The only macros I've ever used as PLD are

/ac "Spirits Within" <t>
/party Spirits Within used. Silence down <se.1>

(For coil)

And a provoke macro. Again for coil. I pop my cool downs when I need them during boss fights. Or just rotate during trash.

I'd probably use macros more on PS3 since there's limited hotbar space but not for PC.