Since I've been here, we've switched to English names for Pokemon. We've switched to English names for Fire Emblem. Is it Gyakuten Saiban/Ace Attorney's turn?
The argument for changing those, as far as I'm aware, was that (unlike some fandoms, which do default to the Japanese names) the English-speaking fandom was more familiar with the localized names, and an English speaker coming here would search by those first. I think that's the case for GS/AA as well.
I don't have an empirical way to test that (especially since fandom nowadays mostly lives on Twitter, whose tag function sucks), but I looked at the 10 most recent English-language fics for the fandom on AO3, as well as the 10 most popular. (Filtering out Dai Gyakuten Saiban/Great Ace Attorney, where the character names are mostly unchanged.) All 20 used the English character names. I think your average English-speaking GS/AA fan is not going to tend to search by the characters' Japanese names, and I think it's at least something we could discuss changing, tag-wise.
Thoughts?