Re-Instantiate Symfony's app/Resource folder

A standard symfony installation contains an app/Resource folder, allowing to finally override any resources from Bundles. I don't know the reason why eZ has chosen not to implement this logic - there is no ezpublish/Resource folder and creating one does not suffice to re-instantiate the behaviour.

As an application developer I need this functionality badly. I see no other way to override bundle resources as this was possible with the legacy extension logic.