After a quick scan through the forum, I understand that some work is being done on search. I didn't see that my suggestions/questions were included in that. So here goes:
Is there / will there be a way to include the Image title/description in the search?
Is there / will there be a way to search for the image filename?
The short answer is: yes, we are considering it and will probably add it. Although maybe those will follow after a little later.