The other (often neglected) challenge is having flooring materials that stand up to a few million pascals of pressure concentrated under that tiny heel. They'll often punch holes right through pre-war parquet flooring, or the bottom of a small wooden boat - yachtsman watch for stilettos like hawks
Yeah, this is a major design point for commercial aircraft interiors, and handling the point loads often favors materials like foam-core composites that usually lose out to e.g. honeycomb core composites on most other performance figures.
