http://www.thecoverproject.net/forums/index.php?topic=2889.0I've already said my piece on these cases. They're bull crap.
If the plan was using less plastic and saving shipping costs, a clear case, made out of the thinner-DVD case materials, the size of CD Jewel Cases, but half as thick, with health warnings and basic instructions printed on the backside of the cover insert and the rest of the manual contained on the disc would save plastic, paper, fuel/shipping costs *and* allow you to fit six copies in the same space as two current copies. All while not leaving giant, gaping holes where my disc should be protected.
Think this, only clear.
Anywhoo, I picked up about 50 white Wii Game cases from a Hollywood Video/Game Crazy that was going out, so I'm set for all these crappy "green" cases.

Which option would you find better? Keep in mind that a full manual could be offered as a download or on the disc or both.
Normal cases with no changes to manual
Normal cases with thinner/no manual
Normal cases with full black and white manual
Normal cases with thin black and white manual
Eco cases with no changes to manual
Eco cases with thinner/no manual
Eco cases with full black and white manual
Eco cases with thin black and white manual
Thinpak cases with thinner/no manual
Thinpak cases with thin black and white manual
Very thin (pictured) cases with thinner/no manual
Very thin cases with thin black and white manual
Very thin cases with thinner/no manual
My perfect case would be similar to UncleBob's idea. The very thin cases with no manual would be good. For me to accept them, Nintendo would need to offer low quality (what they do currently) manuals on their site, along with high resolution, print quality manuals. They could offer more concept art and whatnot at high resolutions at no major cost to themselves.
Really, anything is better than the current eco cases.