Advanced SOAP

Hi All This could be a silly question but one of the things that I struggle with whilst developing my applications is the lack of WSDL generation in the PHP Soap extension and the need to secure my SOAP messages using signing etc which isn't really documented on how to do in the current extension. I have come across http://wso2.org/projects/wsf/php and wondered if there were plans to implement some of the more complex features into the core php extension? Or should I really be implementing these features in PHP itself? Look forward to any advice Regards Marco