I work with the media and much of our business depends on being able to transmit images with captions to the press. We primarily use photoshop "file info" or photo mechanic where we are able to edit metadata, add slugs, captions, locations, key words, copyright and usage instructions, etc. It seems to me that this feature would be a must for most professional photographers - especially photo journalists. Not a deal breaker for me necessarily as we can use other software to embed - but an inconvenience - especially when on deadline.
Do you have plans to add editable metadata anytime soon?