I think clamp-on threadless stems would be prettier if they didn't have bolts protruding everywhere. It is like a dirtbike or mountainbike aesthetic, and is jarring on a sleek road bike. I've seen a few models with the steerer pinch bolts forward of the steerer, embedded in the body of the stem. The other thing I don't like is how fat the threadless stems are. I've not seen any that have a slim profile.