As of Juju 2.0, the default format for "juju status" is "tabular". One motivation was that tabular output is more succinct, which is typically helpful. However, the flip side is that tabular leaves out some info in the interest of brevity. This can be problematic in cases where the extra information is useful, such as when there's an error or when trouble-shooting a problem. See lp:1575283 for an example.
The work-around is to use a less filtered format, like YAML. However, that isn't always an obvious solution. As an alternative, I suggest support for "juju status --verbose".
Initially "juju status --verbose" could just be an alias for "juju status --format yaml" or an expansion of the existing tabular format. However, the dedicated flag would allow for further specialization.
As per bug #1585059, it would be nice to include the member status of controller machines in a verbose output.