The current load indicator (the small spinner in the upper left of reports) isn't really sufficient for users. On our larger reports, which can take a while to load, the user sees a large empty area where we'll the report will eventually render the visuals. Users aren't seeing the small spinner so they think something's wrong. If they're patient enough, they'll eventually see the report visuals load correctly. It would be great if we had more control over the "loading" state. Ideally, we'd obscure the visuals with a "Loading. Please Wait." overlay. Something along those lines.