As it is, it seems bizarrely limited. Here are a few key points:
1. We badly need a "bulk add" button so we can add multiple kanji to the bank at once. Searching and adding each of them one by one is agonizingly slow and painful. 2. Even more important is the ability to have multiple kanji bank lists. As of now, if I want to focus on 10 new kanji, I have to delete the ones already in the bank so that only the ones I care about wind up in the flashcards.