I can't tell you how many credits I've wasted on stock assets that are not what they claim to be. A4 mockups that aren't actually A4, "editable" vector illustrations that have been pathfindered to the point that not much can be changed, "detailed" vectors that have clearly been lazily live traced from a photo.
Please allow users the ability to rank and review stock assets so others don't waste their credits and we can improve the overall quality of stock assets.