I think I will give the repeater field a try with the language being a dropdown selection of the language taxonomy terms. My only conern here is that the user can create duplicates of the same language, so maybe I need to find a JS-based solution to suppress this.
The hierarchical post type sounds interesting as well, I’ve never used this so far. But that would mean that you’d have to edit every language version separately, right? This could maybe get too time-consuming compared to having all the stuff in one place.
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