I have a couple ideas for improving Kanji learning.
First, for Kanji review cards, it would be great to have an option you could toggle to first hide the background image behind the Kanji - then click to show.
When first learning Kanji, the background is super helpful. But at some point, it becomes necessary to not rely on the background. This could help with that.
Second, when reviewing sentences where Kanji appear (and are reviewed in the answer) it would be great to be able to hover over them and see the background image they are associated with. Just to make that connection in the brain - many times I do very well with the Kanji review (with pictures) and then completely blank when seeing them without the pictures.
Those are just a couple ideas to improve learning Kanji.
Thank you for considering!

idea.