Olivier, our “Belgrade connection” ZoNi seems to have taken up on your idea:
Codrut Nistor (Softpedia Reviews Editor) wrote:What don’t I like? Oh, my, you have to pay to use this for commercial use! Even more, it doesn't have a favorites menu! This is nothing, compared to the goodies...
ZoNi wrote:not bad review... but, XnView have Favorites menu!
Whether you manage gigabytes of digital photos or need to retouch screen shots and graphics, the free XnView application can do the job better. Much better. Fast and intuitive, XnView displays virtually any graphic (and even many video) file formats in a familiar Explorer-like split screen interface. Powerful, rules-based batch conversions let you rename, resize, compress, adjust and even transform images to new formats. Create slide shows, output contact sheets and produce attractive Web pages of your photos. A ridiculously complete, yet intuitive, image-management program.
idea 
