I found out about this group list only a few years ago, and in mining the
messages archive had discovered the Challenges and Case Studies of yore.
Those were highly instructive in a way that just isn't possible from
presentation formats (i.e. books, articles, videos). Seeing the creative
successes and also the not-so-successful results was interesting, reading
the commentaries was invaluable.
So I would very much welcome a return of case studies, if it wouldn't be
too much trouble.