Fanfic Peeve - Japanese Names in the Fire Nation

As part of my quest for new authors to profile I'm reading a really excellent work of fanfic that I'm enjoying a lot. However, it contains one of my old peeves in fanfic, the use of Japanese names for Fire Nation characters. It's not enough to detract from my enjoyment of the story, but it is something I notice.

( Rant on the pronunciations of ATLA names )