Sure, it wasn't perfect, but it showed that it can be done, and it's not particularly difficult either. An improved design could have a metal back panel instea

Sure, it wasn't perfect, but it showed that it can be done, and it's not particularly difficult either. An improved design could have a metal back panel instead of plastic, it could use screws instead of plastic snaps, etc. (And with most people using cases, who cares about visible screws?)