https://wccftech.com/modern-warfare-2-rumored-to-feature-an-extensive-map-editor/

Call of Duty: Modern Warfare 2 could feature an extensive map editor, according to a report published by Ralph Valve on What If Gaming.

Modified maps will allow each Creator the option of customizing spawn points, objectives, and restrictions. with the addition of completely changing the scenery of a level and its individual properties, such as crates and containers. Altered maps will be closely regulated; If a Creator is approved, they will receive a verified checkmark.