Because the icon images are stored as 100x100 pixels, I don't think there's really a way to zoom in -- it's not like having a larger image that's compressed for display. However, I think it could be nice to be able to provide a link along with the description of the icon. Right now html (including links) appears to be stripped from image descriptions, and it would probably need to continue to be stripped when the description is used as the icon's alt text; it might be easier to have the link in a separate field rather than try to juggle what html should be allowed. This could then link to a variety of things -- image sources, a larger version of the image (hosted elsewhere until a dw-scrapbook is available, sadly), essays on the image topic, credit for the iconmaker, etc. -- and if combined with the "clicking on the icon should jump to be point in the icon page where the icon information is displayed" suggestion would allow for providing a lot more information about our tiny 100x100 public faces.