Just an idea I thought would be neat; creating a trust of an in-game player/friend. To make it simple, it would just be the same mechanics of chosen trust, but it copies the other player/friend. An example for customization would be: if I wanted to make a trust of my PLD friend, I would choose Trion as the trusts basic mechanics, so it would have the same stats and fighting style as Trion, but it have the same name and look as the player that I chose. You can also customize the phrases in the party chat said by the trust.
One condition I would like to add is that you can only have 1 "customized" trust. Then for customizing, I (Akiro) would talk the trust customizing NPC, I would pick the "base" trust to use as trust mechanics, customize the phrases, then the NPC takes the "look"/armor&weapons that my character is currently wearing. Id then pay a gil fee and the npc would give me a tradable "Cipher: Akiro" that I could give to any friend. And thats it!
Also on a complete side note I think itd be cool to have a Pixie healing trust. Thanks for reading ^^