I would like the ability to hide the picture of the user that is posting on the Recent Activity Stream.
Another possibility is to allow us to post as the school so it doesn't all come from one user who happens to be the one posting.
Another option is for the ability to impersonate another user and have the post include the photo of the person who actually wrote the article as opposed to the one who simply published it for them.
We created a dummy account for our school, with the school logo as the picture. I just have to remember to impersonate when I am sharing items that would appear on Activity Stream...