Job action combos one button

[hagare]

The same would occur for jobs with multiple combos; it's just that each combo would need its own button.

DRG, for instance, would need a total of 4 GCD keys: Full (+2), Chaos (+2), AoE, Piercing Talon.

(7 buttons saved, or 8 with Jump -> Mirage Dive.)

NIN would need a total of 4 or 5 GCD keys: Aeolian/Fleeting, Armor Crush/Forked, AoE, Throwing Daggers, and perhaps Huraijin.

(5 buttons saved, or 6 if Huraijin's functionality were instead consolidated by just changing Armor Crush's 30s Huton refresh to a 30s Huton gain, as an additional effect instead of a combo effect, and increasing its base potency -- siphoned from combo bonus.)

Samurai would need 8 GCD keys: Iaijutsu (Tsubame), Gekko, Kasha, Yukikaze, Oka, Mangetsu, Enpi, Ikishoten -> Namikiri.

(6 buttons saved)

Monk would need 12 GCD keys, its 9 rotationals, SSS, Anatman (ugh), Perfect Balance -> Masterful Blitz.

(1 button saved.)

PLD would need 8 GCD keys: Goring, Royal/Atonement, AoE, Lob, Circle, Shock, Clemency, and Requiescat -> Confiteor (combo).

(4 buttons saved.)

WAR would need 6 GCD keys: Eye, Path, AoE, Tomahawk, Fell Cleave / Inner Chaos, Decimate / Chaotic Cyclone.

(3 buttons saved.)

DRK would need 5 GCD keys: Souleater, AoE, Unmend, Bloodspiller, Quietus.

(3 buttons saved.)

GNB would need 8 GCD keys: Solid Barrel, Gnashing Fang, AoE, Lightning Shot, Burst Strike, Fated Circle, Sonic Break, Double Down.

(2 buttons saved.)

Similarly, BLM could consolidate the mutually or only sequentially usable Ley Lines and Between the Lines, Flare and Freeze, and Fire IV and Blizzard IV.

(3 buttons saved.)

Etc., etc.

I haven't delved that deep into it.
I just picked the combo that has no special gimmick to it besides the increased combo potency.
Because they serve no other purpose other than bloat usually.
But yes, I'm sure there are more.
And I guess people would have a preference on which skill should be stacked with each other.
I wouldn't stack the skills with directionals, myself.