I was thinking to consolidate important information for easy access, maybe include a pinned upload folder in each discussion group folder or anywhere it is fitting. This would help organization as well as add another search dynamic.
Ideally any upload in that discussion would automatically go that folder and work similar to the already existing share function when a post is made. Basically it uploads to the folder then links that file location when the post that uploads it is made. Or it can be directly put in the folder.
More ideally an access function similar to Facebook's saved area in design was my thought.