Really bro, just blacklist them so you wont encounter the players who shrivel your e-peen. Its this attitude that's the reason there's witch hunts on innocent people over a game (blugartr for example has a name and shame topic for both FF online games to the point it gets to real life threats on their person/doxxing.) When really just grow up, you'll never see these people in real life. the level 70 "gimps" will ether eventually learn to play better or move on.

Anyway, As much as I and some others would like a trust system XI and XIV's engines are different-- in XI your fellow and trusts "talk" to you, while your chocobo kwehs and you can change their attack styles. (You could change your fellows attack style but not as easy as XIV's chocobo) Trusts are set in stone.

It'd likely take years to implement and even then it's likely to be buggy.

Surprising Aymeric fans have not raided here already to have their beloved elf at their sides