Got around to tackling XIV D???. While supposedly the easiest of the D???s, I had a bitching time making to the end with my tech. I finally managed to win in a not-bad time of 36.15.
Team
Minfillia (LM2+LMR): R5 Healing Smite, R1 Memento of Prayer, DMT (SSB), major fire resist + minour earth resist
Alphinaud (LM1+LM2): R4 Lunar Ifrit, R2 Hastega, Acestriker (SSB/BSSB/Glint), one fire boost, fire/earth resist
Papalymo (LM2+LMR): R4 Chain Firaja, Gathering Storm (BSSB), double fire boost, fire/earth resist
Y'Shtola (LM1+LM2) R4 Curada, R3 Shellga, MM (BSSB), major earth resist
Cid (LM1+LM2): R3 Burnt Offering, R3 Fire Tempest, DMG+ RM (USB), double fire boost, fire/earth resist
RW: Chain
Magicites: Belias (L15 Empower Fire x2), Famfrit (L15 Res Boon, L10 Dampen Fire), Famrit (L8 Blade Ward, L8 HP Boon), Madeen x2 (L20 Mag Boon + L20 Atk Boon, L8 HP Boon + L10 Fast Cast)
+100 magia on everyone (ATK on CId/Min, MAg on Papa/Alph, MND on Y'sh).
Very rough turn order:
Minfillia: Chain, SSB, Memento of Prayer, Healing Smite spam, refresh chain, SSB, Healing Smite spam
Alphinaud: Hastega, Luna IFrit x3, SSB, Luna Ifrit x3, Hastega, Glint, BSSB
Papalymo: Chain Firaja x3, magicite, BSSB, Chain Firaja x5, BSSB, CMD1 spam
Y'Shtola: BSSB, Shellga, CMD1 to Alphinaud, CMD1 to whoever needs it, BSSB2, CMD1 to whoever needs it
Cid: Burnt Offering x3, USB, Burnt Offering x3, USB, Fire Tempest spam
Even with following AI, stupid slow me took a while to realise that SAp (Eye of the Storm) is not an issue after P1 Turn 4, so Min's turns were to drop chain, SSB for Last Stand (absolutely required for me), Memento, then Healing Smite spam, refreshing chain and Last Stand when appropriate.
Alphinaud was simple: Hastega and spam summons. SSB when ready, more summon spam. I refreshed Hastega since I wasn't sure how long it would last, then finished off with Glint and BSSB. I was prepared to do BSSB CMD1 spam, but thankfully I won before it came to that. I wasn't geared for wind damage so I don't know how well it would have worked. Ultima Weapon was down to Count of 2 when I won.
Pap was also simple: CHain FIraja spam, stopping only to cast magicite, BSSB, Chain Firaja spam, refresh BSSB, CMD1 spam to finish (9999x6 at high chain count), pray for doublecasts.
Y'shtola was by far the most turn intensive and what made this fight difficult to get far in. I actually had to look at the AI to see who was getting nailed on what turn ahead of time and use her CMD1 appropriately. I had time time BSSB refresh basically right as someone would lost Last Stand (somewhere in Phase 2) then use the Stone Skin to tank P3 Incubus Tank Purge. Heal up, DPS, then hope I can withstand P4 Incubus Tank Purge. In my run, Y'Shtola bit it after this, but it was enough to get to P5 and DPS to finish.
CId just did Burnt Offering, USB, spam Offerings until it finished, refreshed USB, then finished with Snipes. Awesome damage at the end.
So as noted, the problem here was dealing with incoming damage in general, and then making sure I was healthy enough to deal with INcubus Tank Purges. I don't have any debuffs - I tried running Min's BSSB1 that I got from recent XIV realm draw, but by the time I got to use the debuff commands, someone was KOed, so I stuck to SSB only - which means Incubus Tank Purge does upwards of 6500 damage. The basic strategy was to Stone Skin the first one, heal and maybe Last Stand tank the second, then DPS to the end. Only got it once.
This is my 11th D??? clear. I wasn't comfortable with this one and I doubt I can shave 6 seconds off with what I have, so I'll leave this one for now. I'm good.
IX is most likely next. Dunno I can stand to do another one of these today though. I already spent an hour on VI (after 4+ hours yesterday) and 3.5 hours on XIV.