C.18.1:2 - Problem
Omitting Scale Variables and the comparison window causes: (i) unfair parity (compute/data/FoA mismatched), (ii) illumination/coverage report-metric creep into dominance by default, (iii) late detection of knees and budget waste. G.9 already forbids scalarising mixed scales and mandates equal FreshnessWindows/pinned editions; SLL complements this with ScaleWindow & elasticity.