Being Tempered is meant to be a pretty big deal. It's something that the people of Eorzea fear, perhaps even more than death itself. There's not much room for being anything else but a rabid and unquestioning zealot that serves the Primal that Tempered them in the first place.
Which is precisely why most role-players have no business exploring the concept - it's effectively a 'bad end' to a character's story. There's no return and the moment people begin twisting details to make it convenient it stops being a case of being Tempered and ends up going down a rather slippery slope instead.
It seems like you could gain the exact same effect from having your character captured and brainwashed by a cult and then have your character's friends discover this and try to either put your character down or save her.
Which is precisely why most role-players have no business exploring the concept - it's effectively a 'bad end' to a character's story. There's no return and the moment people begin twisting details to make it convenient it stops being a case of being Tempered and ends up going down a rather slippery slope instead.
It seems like you could gain the exact same effect from having your character captured and brainwashed by a cult and then have your character's friends discover this and try to either put your character down or save her.