I am a serious PM fan and promoter. On a weekly basis, I use it to process or extract tens of thousands of images from RAW captures. Here are my biggest hopes for feature requests:
I use PM on a Macbook Pro 17 Quad 2.3 i7/ Dual SSDs, 10.6.7
1. Faster saving of resized embedded raw jpgs. I watch the activity monitor and I see lots of core usage during browsing, minimal multi-core usage during saving.
2. Please allow multitasking, especially during saving.
3. I often use two monitors, one in full screen, one viewing the grid view. It would be very helpful for all the key commands(especially refresh) to usable in the preview mode. If the grid view showed where you were at while viewing a full screen preview on another monitor, that would be very helpful.
4. More key commands, say one for extracting.
5. A full screen mode, like the slide show, only it would allow forward or backward movement through the images. No timed advance. Allow stars and ratings to be changed in this mode, maybe visible in a corner.