I think a problem here may be targeting. Many people who are knowledgeable about coins care very little for the packaging
This is a factor today but as the market grows a branding will become more important, It is no coincidence that companies spend billions a year on brand consultancy and let specialist companies handle branding and logo development. Large companies will have abook produced for them which will outline all the rules of their corporate ID. We take design for granted but there is a science and art to communicating your brand through design and media.
I agree that the image is important for widespread adoption but how will you reach that point without getting through the necessary hoops of getting the information to them?