"Resources should be unique. Largely similar resources, such as icons that are hue-adjusted version of each other, simple reskins that don't change the shape of the model, or maps that are effectively clones of each other, such as most LOAP and Footman Wars maps, may be rejected."
"In order to upload a resource, you must have some part in the creation of the resource. All other authors and sources must be properly cited."
The rules also to my knowledge are not finished. The freehand rule (75% freehand) existed in the old site rules and is still in play.