I have not made extensive use of images in RM7 because of its single threaded restriction, that appears to be fixed in RM8. I only use images as a primary image for an individual but I have found the fix broken links to be very useful and easy to use on my limited images.
I have a directory structure for all my "vital" sources and can open them as I need them on an additional screen at the same time I am editing my RM database. I can even cut and paste if my sources are renderable.
I hope RM will make several changed to images in V8 including allowing me to include as many images as I want with any person or fact in my database and output them in reports etc as I want them in any and all reports that RM has. Maybe we can not do that for charts as that would become unwieldy and clutter the chart. Also if I have an image It would be nice if RM would allow me to select the image editing/display program that works best for me.