Today, OPA policies can be applied to feature flags (naming conventions, ownership rules, promotion gates, etc.), but there's no equivalent governance layer for segments. Segments can be created or modified freely, with no policy checks — even though they directly control who gets exposed to a flag or experiment. As flag governance matures, this becomes a real gap: a flag can be tightly policy-controlled while the segment behind it isn't. Requesting the ability to define and enforce policies on segments, similar to flags — e.g., naming/format rules, ownership requirements, approval gates before activation, or scope/size constraints on segment definitions.}