What advantage does this naming convention give you? They would all still need a shugenja keyword. What does it achive?
That you can tell them apart in conversation. "Iuchi Kalsang" doesn't tell you anything about the man except that he's an Iuchi, while descriptive names like Sower of Fear can remind players that, "Oh yeah, he's the guy with the Fear effect."
Do you do this in real life too?!
Sure everybody should change their name to what they do, otherwise I just cant tell any of my friends, colleagues or family apart, it's just so confusing. hmm who? Chris??hmm who are you again, how about I just call you brother 1 from now on!
In all seriousness though. You are still using a name that is unique to a card. The only difference is that you have decided they should no longer have a name but rather their job title. Which I kind of get. Personally I never had trouble remembering Kalsang has a fear equal to discarded cards focus value. Your brain just kind of associates these things naturally. Maybe some people need more spoonfeeding than me and I am just like the Rainman.
If you were to recall something Soshi Eiji did in the story, I think if he was called "Shadowed Tower Courtier", you wouldn't feel the same connection as you would knowing his name. "Remember that time "Shadowed Tower Courtier" fell in love with the kitsune spirit in the forest but then ended up losing it all betraying the clan. Doesn't feel right to me .
Not convinced it really adds anything to the game in way of mechanics.