If your bard misses Battle Litany used between HT and ID, he's in the wrong spot. It's not my fault your Bard doesn't position properly to get the buff; mine does. It's also not YOUR fault the Bard misses the buff. There's openers they can use to be in proper position for me to use Battle Litany in an optimal position for myself without worrying about the BARD being out of range. I told everyone when and where I'm using it every pull. We even had a discussion about it when the BLM was curious about why he was missing it sometimes. He adjusted position on the pull and never misses it anymore. So, with that sort of communication, if they miss it, it's not my fault, especially because we start on the Right Hindleg and I run straight at the side of the leg and stop there to use HT>BL>ID>IR>B4B> before shifting to where I need to be to avoid the first Hydro (and get a 2x gsk).
Of note: the opener and rotation my bard uses while getting Battle Litany with me using it at the end of the gcd after HT has him sitting at 1400+ at the end of Leg 1 without quarantine or potion and using the thordan bow.
We don't pot the first leg, since we already kill it super fast. We pot leg 3 because why not, more or less. Potting leg 2 would require waiting until after the first quarantine, which makes it dicey, though theoretically I could also hold B4B and IR for then and they'd still both be back for Leg 3 anyway. If I were to be smart and use my potion at the start of Leg 3 in my opener there (which I honestly just usually forget to do), It would probably end up being back in time for me to get 2 more in the rest of the fight. You get 3 pots in the fight, since it's at worst a 13 minute fight. Using them as they come up is only ~9 minutes of cooldown time you need to worry about, and you will *never* see a 4th potion (since #4 comes at 13:30 which is 30s after enrage killed you). Delaying your first by ~3:15 will still let you see three potions in the fight if your dps is average or above average like my group's is, so it really makes no difference. 3:15 > 7:45 > 12:15 - 45s to spare.
I couldn't find you on fflogs, so I can't corroborate how insanely that boosts your dps over the numbers I'm currently pulling, and I'm an insane stickler for statistics, primarily because I'm a nerd with a bachelors in Math. :B
I'm currently ~40 dps behind the best Dragoon with my party comp through leg 3, with him not doing adds and having a 210 weapon, more than likely. I fall off further on leg 4 because my dps there is anything but optimized, and he again doesn't do adds whereas I do. He also uses pots in a more optimized manner since I still do it dumb by having it not overlap with any other buffs on Leg 3. I mostly wish there was some way to organize the A4S dragoon parses by "people who do adds" and "people who don't" to be honest, so I can see if my dropoff is actually normal or I'm fucking something up royally (which I don't deny is wholly possible).
//EDIT: I did find another Dragoon who does adds - highest ranking one my party comp (just listed as 0 MCH/0 AST/1 NIN/1 DRG), and they're at ~1386 after leg 4, so I have some work to do.
I apologize if any of this comes across confrontational; none of it is intended as such.