I think I can suggest something.
I really like Envato and I’m gladly using Photodune for my projects instead of other stocks.
I don’t know if many people do it but when I’m searching for photos I always choose so many and just “right-click” save it to my computer and then after trying a lot of them I will buy one. So it would be nice if I can easily find a photo I want with it’s file name using Photodune search. Just like istockphoto for example using numbers in file names.
I keep my fingers crossed for Photodune:)
Best whishes, Sledziu