With the online flashcards, it would be great if there was a setting where I could (for example) go to German 1, Lesson 6, and it only give me the new words introduced in Lesson 6, and not also all/most of the words I already know from lessons 1-5. That way, when I want to make my own physical vocab flashcards I could do so by looking at the Lesson 6 flashcards online and seeing which words were new, without also having to click through all of the old ones. It would also be nice for simply drilling vocab. By the time I'm at Lesson 6 it's a bit tedious to still have "Ich bin" from Lesson 1 constantly showing up as a flashcard. Hope that helps!