A media control knob would be useful - push up and turn to fast-forward/rewind, down and turn for volume. Push left/right for previous/next.

Also, what's with the f/j keyboard bumps - just put braille on every key. We'd all end up learning it without even trying to.

As a programmer, I never really understood why the people who designed keyboards wouldn't have done so in a way that allowed for more common technical uses - why didn't they throw in a row of common mathematical symbols?

That could also have impacted language design:

    i = Σ(a, b, c);