You're addressing the key issue, IMO, with MoodleNet -it's lack of focus on sharing Moodle courses. Sharing entire Moodle courses is what is desperately needed.
What you're describing as a need is what is being created by the California Community College system so that they can share their OER courses via Canvas. It is also what is being created by the Minnesota State System so that they can share their OER courses via D2L Brightspace. It is what Schoology created so that the 40 OER courses created for
Moodle doesn't need to make itself into something it isn't. It is very good at being an LMS.