Options for missing strings

I am downloading an additional language source for live events. This gets added as an additional language source. I want it to be used if a term can't be found in the global source.

There doesn't seem to be a MissingTranslationAction that supports falling through to the other language sources.
All of the current options return true in LanguageSourceData.TryGetTranslation(), so LocalizationManager.TryGetTranslation can only ever return strings from the first language source, which is a bit limiting.

It would be great if there was an option MissingTranslationAction .FallThrough that returns false and allows other language sources to be checked.

It would also be great if there was a global option for "What to do if a term is not found in any of the language sources".

Final possible improvement that would really make the system flexible... It would be great if the system could differentiate between a missing Term and a Missing Translation in a particular language.
Use case: My game is localised, but has non essential text that I am only going to add in English. I want to be able to call GetTranslation, and have it return false if the Term exists, but has no translation in the current language, but if the Term is missing completely it should return "[Missing] TERM_NAME" so I know I've forgotten to add it.
To achieve this maybe you could have two options MissingTranslationAction and MissingTermAction.

Thanks for a great product!

Thanks for the quick response!
Definitely for the multiple sources, if the term was missing, for all cases of MissingTranslationAction, the source returns true, so it doesn't look in the other sources.

Hmm, I didn't think of that, but, looking at the code:
Only MissingTranslationAction.Fallback ever returns null and I dont think I want that. All the others return Empty.
Missing Term also returns empty.