The callbacks in IMaterializationInterceptor occur on an entity-by-entity basis without any consideration of related entities. For example, on materialization I cannot validate or calculate something that requires a related entity (always included in my queries).

It would be useful to have a materialization interceptor method that is called with an enumerable of the materialized entities after they have been identity-resolved and navigations have been populated. Alternatively, a DbContext event for this.

Commenting that the entities in the enumerable may not be tracked, if tracking was disabled for the query.