@ecs, I agree with everything that you said about the Librem 13/15 v4 design.
However, I’m not sure Purism has the rights to publish the CAD files for the Librem laptop cases, because Purism may be modifying a copyrighted design from an OEM to make its cases. I know that Purism says that it can’t publish the schematics for the Librem 13/15 because they are modified reference designs that are copyrighted by Intel.