anyone know a plugin that... allows uploads of entities (blogs/videos/photos) to be sent to groups?

i eventually found a way to do this in 1.7 elgg, at least for some elements.

what i am looking for is a site wide effect, where new blogs, images and videos can be assigned group ids for groups the uploader is a member of.. so the content is uploaded to their own profile as well as to the groups they choose. 

this way the categories (which i have never found useful) are replaced with groups and the structure is simplified.

anyone seen such a plugin? thanks