Turn off moderation per category

[ChopperWeb]

Not sure if a mod or request exist already, but it would be nice to have an option for categories to override moderation. I have moderation on because the majority of my users don't pick a category, so it goes to the first one in the dropdown list. It would nice to be able to automatically approve pictures that were uploaded to actual categories, so that I only have to moderate the ones that weren't uploaded to the correct one.

Does that make sense, and is that available already somewhere?

Thanks