NPCs hailing you according to your IFF?

[Xalrok]

Pretty sure it is possible, but it's predetermined when a new character is created. Theoretically, I would assume it is possible to use the restarts to achieve this, but I think the only way to edit this was through one of Adoxa's hooks. I'd need to look at said code, but again, I think it is a global value. So one new callsign would be given to all players. (If we set it to LSF, everyone becomes LSF)

If I am wrong, I am sure the ones who know will be willing to correct me.

You're right, there is an Adoxa plugin that does this but it's global.