It would be nice to have an easier way to add images to patterns. Maybe add a checkbox to show/hide an image attachment area to each issue when creating or editing a pattern. As it is now, you have to go to the pattern-specific page to add/edit the image.
Additionally, when converting an issue or editing a pattern, it would be nice if the previously attached image remained attached. There are some instances where the pattern is updated and it removes the image from the pattern.