Raw JSON in translations.

When are we getting raw JSON text components for translation files? I'm trying to make a map but one of the texts I have has a custom gradient shadow and there's no way to make that into a translation-compatible text, since each letter needs its own JSON component. I feel as if this could enhance mapmaking for some, and would overall be a good change, especially for resource pack creators who might want to add a little bit of extra flair to their in-game text.