Would the WK team consider offering a few bonus levels for working stiffs?
I work in automotive, and a car parts level would be most excellent. I imagine these could be unlocked around level 40 and be bonus, sideline levels.
My suggestions for topics would be industries that are well-represented in Japan, such as automotive, electronics, video games, economics, general business, finance, etc. I imagine you could devote and entire vocab level to Toyota Production System. That is a bit dur, but it would be awesome for me!