OK, I'm getting really tired of this rethoric being said ad nauseam, so let's actually talk about it.
1.) We were given the Charge system in Shadowbringers
specifically so we
have the luxury to hold dashes for re-engagement without outright losing potency from losing recasts (drifting the CD unused). The only reason you guys are complaining about this is because of how fixated you are on the damage metric of stuffing everything into a condensed burst window at all costs.
2.) The three jobs with damaging OGCD dashes are currently Paladin, Warrior and Red Mage. I'm not counting Samurai, because their's is damage neutral to their ffiller spender. Going by a 120s burst window with a combined +28,8% damage boost (AST, MNK, NIN, DNC, PCT) from raid buffs, let's actually break down what you "lose" if you drop a charge outside of the burst window:
- Paladin's Intervene is on 30s recharge @ 2 charges doing 150 potency + you have a personal burst every 60s, you gotta make choices if 1-2x Holy Spirit (400p, 500p with Divine Might) isn't enough.
Math (Burst window): 150p * 1.25 (FoF) * 1.288 (raid buffs) - 150p = 91.5 potency gain during a raid buff window
Math (FoF-only): 150p * 1.25 - 150p = 37.5 potency gained during a Fight or Flight window.
An auto attack is like 100 potency. Your Fight or Flight window every minute is ~8160 base potency, ~10200 with Fight or Flight unconditionally, without either charge of your dash used. Tell me, does losing 38-92 potency per charge matter if this is what you drop out every minute at Lv100? Crit variance on a Fast Blade has a bigger impact than this.
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- Warrior's Onslaught is on 30s recharge @ 3 charges doing 150 potency, with no personal burst window that affects Onslaught. So at most, 2min raidbuff contribution can be taken into account here.
150p * 1,288 * 1.1 (self buff) - 150p = 62.5p per Onslaught gained under raid buffs (43p without Surging Tempest). Your base burst without Onslaught (8 GCDs, with 2x Inner Chaos + 1x normal Fell Cleave) if done right does about 10703 potency (Crit-DH multiplier x1,9875, ignoring DH bonus damage from DH stat because math hard), 11774p with Surging Tempest. Moving an Onslaught or even two per 2min window has negligible impact to your DPS contribution, especially when looking the whole party's damage output as a whole.
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- Red Mage's Corps-a-Corps is on 35s recharge @ 2 charges doing 169 potency (130 + 30% Magic & Mend trait), plus you are a caster so you don't even "need" it as utility most of the time anyways, you could just walk up to a boss half the time for melee attacks after a dualcast.
Red Mage's 120s burst (2x Verflare/Holy, 2x Scorch, 2x Resolution, 1x Melee combo, 1x Fleche + Contre + Corps + Engagement, Vice of Thorns, Prefulgence) is 11733 potency with Maim & Mend II, including your own Embolden applying to all applicable attacks. This leads to 15313 potency under raid buffs + Spear card from AST. This leads to a 49 potency gain for a Corps-a-Corps if you drop it under a raid buff window. Surely the message should be clear by now.
Conclusion: At Lv100, your total damage contribution of your dashes in your burst windows is so utterly negligible, you will lose MORE damage by drifting your GCD if you make a mistake and not have a dash (let alone two) when it would help you keep your uptime/avoid weaker ranged attacks.
So let's PLEASE stop repeating about how in savage "every bit of damage counts". My brother/sister in christ, your crit/DH variance and even auto attack uptime will have a bigger impact than losing potency from not having dashes under a raid buff, it's not even funny at this point.