I can add a reason. With my event photography business, I place an event's logo on the finished photo (usually as part of the arrangement with the event promoter). This goes in the lower corner of the photo.
Since each event has its own unique logo (or in some cases, no logo at all), I can't create a universal overlay for my ordering website. What I would like to do is to have a logo (or two, like BBPro) overlaid on resized images generated through an exporter as a watermark. That way, in one function, I can set a logo, resize the image, and segregate it for uploading to my site. Ideally, would like to be able to provide a GIF with transparent areas and be able to combine that with a JPG. Oh, and while I am at, you might as well allow me to set the opacity for the watermark image(s).
Right now, I have to take all my folders and post-process them through BBPro, just to get the logo on the images.
Thanks for considering this for a future release.
-Mike