What he said. If the setup looks funny/ugly to you, then I think you will probably need to switch to a threadless fork or give up on the threadless adapter. A threaded headset is never going to be totally "smooth" since you need somewhere for the wrench flats.

That said, maybe one of the 80's Campy headsets would look better to your eye? I don't particularly like them, but perhaps its more "modern" look will make it blend in with your threadless bits above.