Lukewarm response? Can't really agree with you there, I think you've gotten a great response for such an 'out-there' build. Different people have different tastes, no guitar will ever be liked by everyone, what's the most beatiful guitar in the world to you may look like rubbish to someone else. If you ask me what I would change on your guitar I would say nothing, because it seemed like you where happy with it as it was, and asking other people what to change just seems like an attempt to make the design appeal to a larger audience. The point of a custom is to get something that is exactly what you want, If you want your guitar to be liked by a lot of people, build something more mainstream with fancy woods. I love the uniqueness of this build a lot more than the design itself, and I'd love to see a double neck version. Where does this sadness come from btw? you seemed to love the instrument? does not winning the GOTM take anything away from the instrument?
On a side-note I don't think that not liking headless guitars is about prejudice. Some people just don't like the look of a guitar with no head, taste is subjective.