ws-addressing will be addressed as part of the new JBossWS implementation. There is also a JSR assigned to this topic
If you like, I could keep you in the feedback loop for this JSR and we can drive together an early implementation of it in jboss-head.
To get started, if you have not already, you could familarize yourself with our new implementation in jboss-head. And we can setup a few JIRA tasks arround addressing for you to work on.
I don't plan to expend resources in this area on the J2EE-1.4 compatible Axis based stack that is available in jboss-4.0.x
Thanks for your interest