I don't know if this is already covered in another idea or not so here goes:

It would be nice if in addition to sharing individual files with co-workers we could share a common workspace with the ability to upload documents to said workspace and edit each other's work. For instance, I collaborate with two other people writing a weekly article series. If we had a common workspace that we could work from (editing, uploading, organizing, etc.) it would be much less chaotic than including each individual article into the list of unrelated documents already on our Buzzword desktops. Instead we could just have a access point on our Buzzword desktops that link to the common workspace.

I'm not a very technical person but I hope what I said makes sense.