Well, ya just had to go and ask that, dincha?
I took a look at your site (again), just to get an idea of what you already are into. The Patrolman is very close. But, for MY perfect neck knife...
I would want a blade between 3 and 3.25 inches, with a drop point sort of shape, with a handle of about 3.75 inches. The handle would have a curved spine, not as great as the Fang, but more than what I see on your site. Something along the lines of the Spyderco Native, but maybe a
little more curve. Blade width a little more than the handle width, so that the difference between the two would form a natural guard to prevent the hand from slipping up on the blade. A lot like your Marshall or Large Hunter, but maybe a little more pronounced. And I would leave a sort-of finger choil at the juncture between the handle and blade, at the width of the blade, so that one could choke up on the blade, with the index finger in the choil, to get more precise control for minute utility work.
What I envision is primarily a utility knife, but with the guard set-up like I mention, and the curve of the handle, allowing the knife to nestle in the hand to that in an emergency defensive stab, the butt of the handle is pretty much reinforced by the heel of the hand, and the natural guard between the narrower handle and wider blade reinforcing the grip to prevent slippage. If there are NO scales on the grip/handle area, this could make for a bit of a painful stab, I realize. But, this would only be for emergencies, and the curve of the handle would make for a comfortable grip for utility work. Or you could add thin scales, with the grip area of the metal drilled with lightening holes.
At least that is what I envision. Hey, you asked.
------------------
It's just a ****ing staple!
Outlaw_Dogboy