Section 1.6 does not mention anything about requiring downloadable content.
1.6 Work DoneFor a WiP submission to be allowed, a not insignificant amount of work must have already been by the submitter or co-authors and that work must be displayed via the screenshots and description.
Simply listing what you plan to do or using images of other peoples work and doing no reasonable level of work yourself is not allowed.
Sorry dude, but i have to do my job. The rules state that WiPs need to have actual downloadable (significant) progress