During my psychology a-level we have lots of different content to cover within a single topic. Memory consists of 9 topics in which I have made each individual deck per topic. Meaning if I ever wanted to come back to the topic and go over a combination of the different topics together I would need to make a new deck and copy all my flashcards in from the other 9 decks. Which is such a time wasting activity. The app Brainscape already has this in store and I just think this would be a great addition to the app.
Another addition you could make in terms of flashcards is the ability to edit them while revising the deck. As the amount of times I and other people make mistakes while going through flashcards and aren’t able to change it immediately, I also feel like this would be a beneficial addition.