FileBot

Is there a way to obtain the original episode name in a similar way to what's done for the show name?
To be precise, the equivalent for the {n} binding should be {primaryTitle}, is there something like this for {e}?
This information is available on AniDB, for example for Fushigi no Umi no Nadia (Nadia: The Secret of Blue Water) Episode 1:

• Main Title: The Girl at the Eiffel Tower
• Official Title: Eiffel Tou no Shoujo
• Official Title: エッフェル塔の少女

Ideally I'd want to generalize, whatever the original language of the content, the title (movie title, episode name and series name) should be in that language, for files at least.

You could use the {localize} binding for that: @see viewtopic.php?f=5&t=3761

Is there any guarantee that {localize} has the original language available?
Also, for example, is there a suggested strategy to have 'Romanized Japanese' when the original language is just Japanese?

AniDB doesn't have "original language" information.

You could try and take the first audio stream language and use that as key for localize. You could also try {languages} as key which might work for TheTVDB, but for Nadia it just says English.