Okay so I decided to use macros for buffs and a Flare cooldown for BLM. If I can get to a spell speed point where all the cast time are in seconds (which if unlikely if the GBC is fixed) then I may try fitting my MP restoration macro in again (and maybe add Raging strikes to make up for lost DPS)

Still I'd want to see evidence of a macros's DPS both from normal players and those skilled enough to tackle SCoB and/or Leviathan EX so if anyone is willing to make or find comparison videos for DPS performance with macros and DPS performance without I'd be grateful (and I'll add then to the OP for all to see)