For Blm honestly there isn't much need for macros. Some I use
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/micon "Convert"
/ac "Mana Draw" <me>
/ac "Convert" <me>
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If you pvp the above one is helpful as it doesn't require an extra slot assignment for pvp action Mana Draw. If I need mp I just hit This Convert macro, if mana draw is available I'll Mana Draw instead (which is better than convert because it doesn't reduce HP).
I also macro'd Blizz3 into
/micon "Blizzard III"
/ac "Blizzard III" <t>
/ac "Blizzard" <t>
simply because I was tired of level syncing in fates and having my easy 1-2-3 AF-UI layout messed up because Blizz3 isn't available at lower levels.
Can macro in for flare
/item "X-Potion of Intelligence" <me>
/ac "Flare" <t>
As someone else said, there is a much better method for seeing when actions are available. Instead of macros like
/wait 12
/echo Shoulder Tackle is ready
just take an unused hot bar, make it class/job specific (unshared), increase it's UI size, and place right smack in the middle of your screen. Put you actions that you want to keep visible (ie for blm swiftcast, raging strikes, and lethargy probably good idea) on that hotbar.
You don't use that hotbar to execute the actions, but by having it enlarged and dead-center visibility, you will always see the greyed-out dial of those actions (instead of having to search through your cross/hot bars) thus always knowing when they are available again. It can make your life a lot easier.
Especially for me and my warrior. By having internal release, berserk, unchained, and infuriate CDs easily visible I am constanly aware of when/whether I should sit on ability or use it.
(ie sit on my berserk for a few more seconds because unchained is about to be available)
Same situation with my Bard and all of it's off the GCD abilities + Raging Strikes.
edit: you want to avoid /wait macro's as much as possible. Any lag or connection hiccups are gonna fk it up
oh another I forgot.
/micon "Scathe"
/ac "Thunder III" <t>
/ac "Fire III" <t>
/ac "Scathe" <t>
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One button solution for dpsing while dodging aoe. Like when dodging Ramuh Thunderstorms be doing some scathe spam. If thundercloud or firestart procs are up, will throw those at the boss instead.