Is it possible to see where a kanji is used in vocab during a review (and not just the lessons)? Usually seeing the vocabulary is pretty integral to me remembering the meaning and importance of the kanji. I wish I could bring it up during reviews when I get an item wrong just like how vocab has the example sentences viewable.
For the time being, it looks like you can click on the kanji and go to a separate tab where such vocab can be found, but I wish it was more streamlined into the review process.