Yes, there shouldn't be many wanting a class here, except for the many that would like to join a class here.
I still think a class here would work by establishing the topics for each class and getting amateurs, like me, to tackle all of the topics (requiring strong participation by would-be class memebers). Once complete, the professional volunteers could review them in their spare time. This minimizes the burden on the pros who don't need another teaching work load. The number of podcasts (Fraser and Dr. Gay) are now sufficent to augment the course materials for most classes.
Once all, or most, of the topics (ie chapters) are complete for a given course, then the course could be announced and scheduled.
The basic plan on how want to set-up a course here still needs resolution. Once this is done, the details, such as allowing others in late, can be worked out. We haven't gotten past step one, unfortunately.
We know time flies, we just can't see its wings.