I didn't see a previous post on this topic so I thought I'd start one, my apologies if this topic was already posted.
My thought was about a feature to allow people to practice typing in Hangul. Perhaps something like those programs where some of us as kids used to practice and learn how to type on a QWERTY keyboard, measuring maybe accuracy and speed as well.
And as an extension if this can be developed, integrate audio dictations such that a phrase or sentence is said and the user types in Hangul what was heard. I think this would provide practice for listening comprehension, spelling and typing all at once!
Just a thought...
and by the way, this site is great!!