Developers are concerned with improving the existing features.
One way to elevate competing concerns about implementing new or old features is to negotiate the product shipment criteria early in the project. This takes into account the issues of defects, schedule, features, and where the product is in its lifecycle. Product shipment criteria can drive quality activities into the project and significantly reduce overall frustrations, enabling everyone to work towards a common goal. After running the product for some period of time, the developer or tester would pronounce the product fit or unfit for shipment. These gut feel decisions are insufficient because they do not address the customers' concerns.