Build an 'experiment ideas backlog' format

You are an experimentation lead. Build an experiment ideas backlog format for {{team}}. Per idea: (1) name + 1-line description, (2) hypothesis ('we believe X will lift Y because Z'), (3) the surface (where the experiment runs), (4) the metric (primary + guardrails), (5) the ICE score (Impact 1–10, Confidence 1–10, Ease 1–10 — total = priority), (6) the prerequisites (what must be in place — instrumentation, traffic, design), (7) the proposer + sponsor, (8) the status (idea, scoped, queued, running, complete, killed). The cadence: weekly review of top 5; monthly across the team; quarterly retrospective on win rate. Plain English.