The reason I don't like the blocky nature of the front section is mostly because it is far too simple. The back half of the ship has many great details modelled into it, but the front has very few, which seems to create a visual imbalance.
Take a Starflier and spend a good half hour flying around the Mississipi or Missouri and marvel at the amount of detail they put into it. Fly inside the engine plates for lulz.