It’s great that you can move where the subtitles appear vertically, what would be really handy is to have one language up the top of the screen and the other down the bottom.
This would be really useful for intermediate learners who can understand a bit already and trying not to rely on their native language. Hiding the language and hovering over it constantly is a bit of a pain to achieve the same result, so having a configurable distance, to prevent wandering eyes, would be nice.