I think that if the 'thickness' of the hammer head was knocked down by about half, it wouldn't look as odd, even for as narrow as it is. To me, the fact that the ship gets *thicker* as it gets to the front is 'off'. Even though the Vor'Kang has a thick front at the middle, the fact that the hammerhead narrows out counteracts that. The Bortas needs a little rhinoplasty and it'd look great.
Yeah, when I first saw the ship I thought her intended use was as a battering ram. :p