First of, WOW, I love your plugin. File Gallery is just great. I was using Nextgen Gallery, which also is really wonderful. But for me, I was looking to make my entire blogging workflow simpler, and less cumbersome. So to finally have something like File Gallery make the native WordPress gallery features actually usable -- it's great. Nice work!
The only feature that File Gallery hasn't been able to give me that I miss from Nextgen is EXIF metadata handling. Nextgen had a great ability to take the EXIF data from photos and apply them into the gallery output. For instance, you could take the EXIF title or description and put that into the photo's caption field or description field.
Could this be possible with File Gallery?