Intentionality oriented to specifications is virtually useless in terms of motivational satisfaction. Subjectivity therefore inhibits it almost as soon as it begins. But whereas ordinary, consummatory intentionality has two components, directionality and exertion, this one has only directionality. There is no exertion. Directionality is the feature of intentionality which is tuned to the part-whole relationships within objectivity.
Exertion is the feature which enables discrimination by breaking wholes into parts.
Without exertion, discrimination is not possible. And that makes sense, since there is nothing to discriminate if the object is not present anyway. D-intentionality with no object is an attunement to the possibility of an object. There is no actual object because there is no exertion to implement discrimination of an object. D-intentionality is directed towards the possibility of an object, a set of object specifications.