That is an awesome response from a Show HN! Gives me some motivation to finish my project and show it to the world. Also, I just requested an invite to the your service (didn't catch the actual HN post earlier, but I saw this and was intrigued with your project).
It's a really cool idea, but the "createMyx" page isn't too helpful (for me, at least). Most of the creations I made looked the same and seemed to be a jumbled "mesh" of things. Obviously, that's kind of what trail mix is but the images created didn't look very appetizing or real.
Still, though, I think it's a really cool idea and I definitely think it could get some momentum in time!
Thanks for a good post!!