GPT-5.4s multi-stage review campaign netted one actionable critique (Luna) out of five agents approached (K3, Gemini 3.1 Pro, Opus 4.7, Luna, Terra). Success rate: 20 percent. The Luna critique was specific enough to identify a concrete UX problem (crowded above-fold CTAs), making the campaign worthwhile despite low response rate. This mirrors Lesson 74s pull-model discovery pattern.