DFFOO [JP][Thancred Raid Lufenia+][Alt run] XIV Scion but it is a Lv80 Yda w/ Laguna and Lenna
Turns out even though Yda is Lv.80, she is still really good for this fight. I like how I brought other saping CAs and I forgot to use them because Yda took care of the boss orb already lol.
Yda poison, sap, HP poison:
Yda's LD and rework has been out for a while and she is still relevant. For this fight, not only she has a normal unframed poison, she also has a sap + HP poison rolled into one. These debuffs last for 9 turns and since you want to let the bosses have some turns, those HP poison does contribute to some portion of the boss dmg taken even though she does not receive all that much ATK from Lenna and Laguna for its scaling. The boss has relatively low HP than your ordinary tanky boss in this era, so it is nice to have it.
Also the consecutive turn that boss takes would mean debuff duration plays a role in this fight. You can see Laguna's LD debuff falls off really fast while Yda's poison/saps are still at around 6 turns at the end. The boss on average gain 25K+ BRV per turn, including their on turn attacks and Yda in this setup saps them for around 20K every time they move. Hers alone would keep you safe.
Bringing Ignis (other than for debuff evasion) would arguably help Yda even more, because he has enchant and imperil + party ATK buffs for Yda's poison. In exchange you would have to deal with consecutive turns on top of Yda's break-triggering consecutive turns. So it gets more tricky but may be more rewarding.
Yda's LD also has 3 levels of relevance to this fight.
You can pop it just before their consecutive turns to take advantage of her 100% evasion rate after LD use and dodge every BRV hit the boss does, thus reducing their BRV gained from each turn. It is also a nuke.
Despite her having BRV dmg problems due to being a Lv80 character with no EX extension II, if you give her battery and BRV gain or just more than 1 enemy target, her LD will destroy things in her path.
It also has a really niche use for fights with -2 orbs. In the event that breaks and things that pushed the boss too far, since the LD use has high action delay, you can actively push your self back to save the orb.
Obviously being Lv80 means Yda needs more DPS support the further we are into the fight, most notably DEF down (Laguna) and BRV dmg up (Lenna). You can see I failed to break twice in this fight and it was a facepalm moment. Since the HP shield at 30% is quite huge with maximum reduction at 90/90, I opt for Laguna friend's support to get through that stage. Other than that most of the fight is quite easily managed with Yda. I am really satisfied with the finishing touch though.
Overall with a little creativity, most of the Lufenia+ characters can still work. Yda just happens to be really suitable for this fight. She just needed a bit more support than current characters.