It's not a bad idea but unfortunately flash metadata is not indexed. Neither are the info pages, which I had hoped to make searchable someday. Unfortunately it would take a lot of time and work to achieve this, I improved the code extracting metadata from flashes last year and it took the several months for the server to update every flash page.
Many flashes don't have any metadata at all or are missing an entry for Document ID, especially older ones, so looking up doc ids would have limited use, however being able to search metadata in of itself would still be a good feature.
At one point I wanted to index resources inside flashes as well, for example every jpg embedded in a swf (or even a hash of connected vector positions inside every single MovieClip). That way you could have found similar flashes easily. Or flashes borrowing content from other flashes.