I rather like the "with extra readings" variant of the Match the Readings question type for Kanji reading quizzes. Currently, the question is marked as correct as long as you assign at least one correct reading and no wrong readings to each kanji, which often leaves me wondering whether the readings I left unassigned were decoys or additional options for one of the quizzed kanji. It might be nice to display an extra "hey, you forgot 生→セイ" text message, or otherwise highlight the readings that were included in the question in the post-answer dictionary boxes.
