"specialized, much too complicated pieces."
After recently building the Saturn V kit, I can say there are few custom pieces involved. As far as I can see the only custom ones are the lettering (USA/United States) and American flag bricks.
It even uses some 4x2 pieces. However some of the bits are complicated!
And.., Castle! Luxury. All we had were standard 4x2, 2x2 etc, along with some doors and windows, and some roof pieces.