Ayame is an awesome trust. She'll make the best skillchain she can with you. The idea is great.
It's not great damage but it can be used with a player-mage or shantotto to MB with consistency.
Zeid will ground strike after you ws. He can be as good as Ayame.
The problem is that she whiffs a lot. I think a big improvement to all melee trusts is that they inherit the player's gear-accuracy + food. Not player-buffs, but of course buffs that affect the trust (IE, they wouldn't be affected by my Enlight, but they would be affected by Madrigal from a bard).
As long as they don't inherit attack power, their ws's will still be mediocre, but they'll serve a good purpose.
Pass these stats onto tanks as well. If Amchu WS's, I don't want him to miss.
Finally, add TP display for trusts.
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I'm not so much bothered by ballads but paeon irritates me. I definitely think some of the songs should be removed from Ulmia and Joachim. Paeon never saves anyone. (Paeon, Operettas, Pastorals, Etudes because they're not as good).
Oh, and give both bards the trait of casting Mazurka after the player disengages. Could even make this occupy the third song spot.
But yeah, if I use a trust buffer, I use Qultada.