I know about the my ticket for extra fields in version 0.2.0. My gallery is finnaly live and i use to call the extra fields of images by template for the moment.
But now i found another issue:
Extra fields for images are not saved on excerpt-view:
Edititing the image/attachment itself is working when filling the "Custom Attachment Field" and click on update.
Saving "Custom Folder Field" is working, too.
And two more things at this point:
1) Might it be possible to set the excerpt-view as default when clicking edit on "all folders" view?
2) Will you add an additional field for editing the title of the attachment in excerpt-view?
I think the best workflow should be to set up all changes of the gallery-images in (this) one view without needing to click additionally to the edit-attachment-page for each image to change the title shown in breadcrumb...