When clicking on a filter in operator mode it switches from the Home window to the Samples window (and the filter buttons disappear). The home window in the user mode is the updates and news page with the microposts. All samples are displayed in the samples window for users. Why not make it the same for operator and user? The current "samples" view for the operator is useless aniway... Both have the samples only in the sample window and give both the filter buttons (in the sample window).
Home screen can be the same for users and operators, but make the default landing page after login the "samples" view.