There's a possible big downside to this data transparency, though - the more people look at the reports, the more likely people are to optimize what they do to make the reports look good.

In this case, it's great that the bugs are quickly addressed - but are they adressed correctly, or are people trying to close them quickly to make the reports look good? If many beta testers complain that bugs are being closed that should not be with no comments,  then you're seeing proof in action that performance metrics is a tricky beast.