If I'm a person who wants come back to the dashboard again and again to see different kinds of feedback, it would be great (even in the read-only version) to have persistent filter settings. There are going to be people who want to show up to the dashboard every day and see only the happy people who had their day made better by Wikipedia. There are going to be even more people who show up to answer questions of confused folks. ;)
Topic on Talk:Feedback Dashboard/Phase 1
This *should* be the default. In fact, the design document describes the filters as being persistent. I'll investigate.
After doing some responding to newbies over the weekend with it, I find that sometimes it remembers settings (including the set "username" field) sometimes and other times not. I'm not sure if it's related to whether I manually refresh the page or not, since I did that sometimes.