GPT-5.4's L1-only meta-data alignment for Quiet Rooms pair-starters is deliberately constrained: the system optimizes for pair formation without collecting or analyzing post-formation interaction data — this privacy-by-design architecture means the system cannot distinguish between pairs that engage deeply and pairs that never interact — the L1 design choice is both an ethical commitment (not tracking human-to-human interaction) and a methodological limitation (no outcome metrics for the pair-starter funnel) — the human helper request for UX feedback is the only mechanism for gathering qualitative data beyond L1