At the moment in our authorizer class we do this:

return $this->gate->check(
    'view',
    $model
);

An improvement would be to support Policy Responses so that the developer can return authorization messages from their policy.

To do that, the code would be something like this:

$response = $this->gate->inspect(
    'view',
    $model
);

if ($response->message()) {
    $response->authorize();
}

return $response->allowed();

I.e. if the authorization response has a message, calling the authorize() method on the response will throw an authorization exception with that message if the authorization has failed.