As much as I love using MC for years now, I can't help but wish the image abilities were a little better. As for organizing, it's very good. What would help though, is a few more conversion options.
1. The resize option is poor, with the only choice being to either overwrite the original, or not resize. In my opinion, a resize option should never overwrite an original file, unless the user explicitely wants it to. Also, it should ask for a destination for the resized file.
2. Batch options for resizing and changing format would be useful.
3. A "compare" option would be really nice. The user could highlight several images, and then have them displayed side by side in the full screen viewer. I'm not asking for MC to replace a dedicated photo editor, but these are common features found in just about all photo organizers now. You could give some of the big names of photo organizers like ACDSee a run for their money with just a few more serious photo organizing features.
Keep up the good work!
Mike