Interesting thread. I ran into a similar issue with Hungarian. I wanted the interface and quest text in Hungarian, but some mods just don’t come with translated string files.
One example: I worked on a custom Fallout 4 mod that adds a functioning underground location to the Commonwealth. It includes a few interactive terminals, a small minigame, and a questline where you help a former scavenger reclaim his stash from a raider group. The mod doesn’t add new voices, just UI elements and dialogue options, but since I built it in English, I had to later translate all the strings to Hungarian manually. The idea for that mod was actually inspired by browsing sites like this one, which covers Hungarian online casinos and game mechanics. I wanted to see if similar risk and reward systems could work inside the Fallout universe.
ESP ESM Translator was a huge help. I definitely recommend it if you’re working with multilingual setups. Sharing eet files across the community could save a lot of time for niche mod projects like these.