Do it, Oldman. Do it for me. I have a small collection of technically oreinted articles that I envisioned submitting to Black Belt magazine, but for one reason or another they manage to stay just
this side of complete.
So if I am doomed to stay in the twilight of half-acheived dreams, at least you can follow through.
Cord also has a very good point in that the "graphic novel" is a well accepted form nowadays, so you need not aim it towards children unless you are so inclined. (This from a long time comic book reader who remembers when "Michael" killed almost all the Avengers!
I think it would be great, and don't worry about people not using their imaginations. Many won't anyway. Some people will find a spark in the things you might show. I am one of them. Hell, the whole concept of different applications for kata moves is alien to my AKK sensibilities.
So right there the book could be beneficial to some - no matter what you show.
Go ahead.....do it. You have several guaranteed sales, anyway!