At first, thanks for this great software!
On my K300i camera photos are named in a very silly manner: Photo(1).jpg, Photo(2).jpg, etc. When old photos get deleted, the new ones are named starting from 1 again, so you can't just put them all into the same folder. You need to rename each file manually or create distinct folders. Sometimes this is really annoying.
I consider using the following items as a part of file name:
— Persistent counter increasing with every downloaded photo.
— Date of downloading (say, “Mar-01-2007(1).jpg”).
— Date-time of shot if this information can be retrieved.
Of course, users of more advanced cameraphones don't need this feature, but I hope it is not too hard to implement as an option.