I build quarter scale. Giant Scale models must be quarter scale to qualify in that category. I'm currently building a quarter scale SPAD XIII as a flier with plans for another museum quality static example at 1/3rd scale. Each rib, longeron, web, stringer and every other part must be fabricated to scale down to the rib stitching. It's building at these scales that are very satisfying for me from a (complete) scale perspective. Detailing the cockpit of a 1/48th scale model begs the question: Why? You can't see the dang thing after it's enclosed in the fuselage halves; especially single engine fighters.