This suggestion was already submitted before, and was considered. I could try it, however it’s not simple at all. I unfortunately have no idea how could this impact forums that have English content, nor the performance implications that this could possibly have.
Because of that, I am very hesitant to make quick changes to forum databases that are very difficult to revert properly without breaking even more things. If this is a problem for a significant amount of FreeFlarum forums, I guess it might be worth a try.