Quote Originally Posted by weif View Post
While the filenames of the images do contribute to their inclusion in search results for image searches on Google and other search engines, the evidence from performing these searches indicates that context is more important. Make sure that the product the image is on has a good name and a good, valuable, relevant description, and the images should be indexed appropriately.
and has been pointed out

The way that IH stores images is a 'caching' type system and changing the naming conventions is problematic because that approach is deep down and inherent in the structure of IH.
So with regards to Image Handler and file naming it will require a fairly substantial change to the way it is architected to change the file naming function.