Since Dark Matter Pro has been fairly successful I've been thinking about doing one or two more themes based on the Dark Matter Pro core codebase.
These sketches are just a starting point at the moment to see if something nice comes out.
If this theme ever were to become a reality, it would have the following main features:
1: a small toolbar with buttons for: description, EXIF info and comment which pops up when hovering over the photo and disappear again when you move out.
2: an Apple style 'dock' containing the image browser carousel. It would slide in as you mouse over the bottom of the image and slide back out when the cursor leaves that area.
3: overlay windows for the EXIF info, description and comment form
The theme would support any photo width and 'stretch' to whatever width your photo is, with a sensible minimum width though.
Still working on more ideas. Let me know what you think.