Let a deployment override a few strings of another locale namespace (e.g. conversation hero.headline)

[Nemuritor01]

locale.register(ns, locale, dict) refuses a second dictionary for a namespace and locale (locale namespace "…" already has locale "…"). That is right for ownership, but it means a deployment cannot change product copy such as the empty-conversation headline (conversation / hero.headline, "Into the Unknown") short of shipping a whole language through addLanguage.

Would you consider an explicit override layer, e.g. locale.override(ns, locale, partialDict), consulted before the owner's dictionary for the keys it names, and removable like every registration? It would keep single ownership of the full dictionary while letting a deployment rename a handful of product strings.