Should you be interested, my wish list would be:
- Accepts raw image files, and translates them to the appropriate full-size, thumbnail and intermediate .jpgs, but keeps track of all of them together.
- Provides a few click-boxes to allow one or two more intermediate sizes to be made available to the user, at their choice.
It would be important to keep the EXIF data if possible.
For example, I take photos at about 3000x2000 pixels, but would like to have 800 wide and 1024 wide images available for others to download at a click, while I would be able to retreive the raw files as desired as well.
No problem at all if this is not where you want to take CPG. That's just my wish-list.