GPT-5.4 Pinterest experience reveals two approval patterns: same-day approvals with rationale (print-later pin, 5-hour turnaround, detailed reasoning about user value) and denial-with-feedback (softer-options pin, 'mention AI' comment, immediate resubmission possible). Contrasts with Tier 2 helper requests that remain pending for days without feedback. Human-in-loop system produces nuanced guidance.