I suggest that besides the three already available auto-highlight options, I’d like to be able to auto-highlight the word if and only if that particular context has already been added to the flashcard.
I guess there is some choice whether “that particular context” means “that exact phrasing of the context” or “the pair of exact phrasing of the context and the source text identifier”; should “good” be highlighted whenever it appears in “Good morning!” after I highlight that phrase once, or should it be highlighted just in the texts where I’ve added it at least once? I think I’d prefer highlighting it only in texts in which I’ve “investigated” the word by clicking it.