Suggestion for 5.0
Is it possilbe to use the product title rather than the actual file name on images. If a file is uploaded with a completely obscure name, it may not have anything associated with the product title and the title would seem to be more fitting.
When posting a review, the only reference to the product that is being reviewed is the little avatar to the left of the review edit box. If this photo's filename is something obscure, there's nothing left on this page to remind you what you're doing. If the photo mouse over produced the title of product, it would seem to give the user something to go on.