Right now the look of the PT seems more like 50's B-movie retro deco. rounded and shiney. The OT is more industrial, everything is not meant to be stylish, but useful. They didn't build ships to be pretty, they feel a lot like the 60's and 70's muscle cars, sharp angled and tough.

I don't think the architecture/design of the universe in PT is bad, but really they could use more of a Star Wars look to them. Angel's mockups do that, they keep the rounded look, yet still have that industrial charm that the OT gave us.