I want to be able to filter the activity stream that shows on a portfolio or work item. Currently, all activity on the item and children of that item show in the stream. This can make it hard to follow the flow of a specific type of change, like status. If that stream could be filtered by item, type of change, or who done it I would find that very helpful, especially for larger portfolio items with lots of work under them. Larger items with lots of child items have a lot of traffic and there isn't currently a good way to wade through that traffic to get the salient data points with out scrolling and keeping a sharp eye out.