Manage configuration inside a configuration file. This eases the configuration process when the default config is not the desired one.
Move CakeResque logic inside the class.
Strip bootstrap.php from unwanted bits.
Port Configure::check() for users not yet using CakePHP 2.3.
Add a default CakeResque bootstrap configuration file, intended to ease bootstrapping CakeResque with a custom configuration.

For example:
CakePlugin::load('CakeResque', array('bootstrap' => ['bootstrap_config', '../../../Config/cakeresque', 'bootstrap']));