When it comes to organizing images in a DAM app can you please have a look at how Apples aperture organized them. They had Project, Album and Smart Albums. Then you could organize any of those items into folders. Also they allow a broad ranging choice of how to store the images, from within aperture library, an external folder on the HD or on an external HD, the options were limitless as well as automatically backing up the original images to a separate folder/drive. With work I will have multiple projects running dealing with between 2000 and 10000 images, Apertures organizing system made it a piece of cake to organize and categorize the images quickly and effectively so when it came time to make a movie out of the photos I did not need to pour through thousands of images as they were already organized in a way I could pull up the ones I needed straight away. I found lightrooms organizing system cumbersome and I had to go back and for between different projects (libraries), I want to see all my projects on the same screen as I tend to go back and forth between them quickly to compare.
Can you also add editing capabilities for the basic edits like lightroom and aperture have and then link the photos into the Photo app for more advanced edits.
For me aperture is the best DAM I have used and it is what made lightroom what it is today, it's a shame Apple discontinued it, but if you guys took on some of the organizing features that would be fantastic.