I'd still go with removing the rear "guard" on the top. I just got pointed to the thread and that was my first thought one page one and on page six.
Other than that, not my type of thing to make - which is no sort of criticism. But my take on it if I was provided this with a customer design would be to extend the serrated back further up, making it longer, and minimize the dead space near the handle. And, of course, if I was doing it in 1/4 inch I'd run to a convex grind. But everyone knows I am the convex mafia.