I want to clarify, it's not that rails "disgust" me, it's just that I think someone can come up with a better way for attaching a light or laser without clunky cheese-graterish type rails. I, personally, like more of a smooth, sculpted, curved feel to to the frame.
My thought is that, without making the frame bulky, blocky or "cheezy", a single dovetail milled into the underside of the bottom of a more rounded (traditional style) frame could be used to mount a light or laser (if you want) and secured with some flush screws. Then, when nothing is mounted, a piece of metal (or plastic) can be inserted to make it smooth and give it nearly the same contour as a more traditional pistol.