The rear looks as if it didn't belong to the ship, maybe it's just me.
I'd flip it vertically, then it would look a bit more harmonized with the bow, I wouldn't touch those 'wings' on the sides - the dreadnought has them and it's the one feature of Liberty warships I consider pretty.
Down with the assault frigate!!!
(And dont' yuz worry, I'll be the same enthusiastic when the battlestars' time comes)