Those jars can most probably be moved to common/lib.
This is basically for two reasons:

• slim down the AS distribution
• allow for an easier handling of the double deployer (jaxws / jaxrpc) structure when using jbossws-cxf and jbossws-metro stacks
• theoretically I don't think there's any special reason for runtime libs to live in the deployers instead of common/lib. jbossws-jbossXYZ.jar is probably an exception, but moving that too does not hurt.

There shouldn't be major issues with this, except for some tuning / changes required in the installation / deploy scripts.