When priorities are altered to non-default values, those values are displayed, but when set back to 1 (the default), the field is no longer displayed. This is similar to the request for votes in SERVER-2463. This makes any scripted changes (and particularly reversion of those changes) to these values difficult to verify

Perhaps a parameter could be passed in (similar to sh.status(true) in a sharded cluster) that would trigger "verbose" mode and print any default values also.