Simon, that all sounds good to me. It was only recently that I'd even run across the need to maybe look at isWrapperStyle(), from say, a binding impl, in the case of implementing the wireFormat.jmsdefault behavior of sending a single argument unwrapped. The new API should work well with that use case. Not sure if others have concerns I'm not considering though...
I'd think some of the code (like the Java2WSDL maybe) you're going to have to modify makes an assumption that input & output are either both wrapped or both unwrapped... (since JAX-WS defines "isWrapped" at the operation level) so an idea would be to possibly add a validation exception there. Scott
