The idea of the word bank is excellent.
Problems:
Not all words have a Class ( example だいたい daitai ).
The Word Bank will only display a maximum of 50 words per page.
Related Lessons initially displays a collapsed count of how many lessons are related to the word, and it is not sortable.
Suggestions:
Add classes to all dictionary words.
Allow Word Bank to display more than 50 words per page.
Suggestions on Related Lessons:
Some words have 2 Related Lessons, others have as many (or more?) as 10. I would like to be able to sort the Related Lessons column so that the lessons can be accessed and viewed in sequential order.