Good question. This is the right archetype. I doubt if the core SOAP aspect will change in amny way - it is well established. My only concern is the (E) aspect - it turns out that there are quite a number of variants used around the world, and in any case SOAP is a really a very generic framework that are really just broad headings. I used in practice and found it helpful but there are no ‘strong semantics’ in there. That is why it is modelled as a section archetype
If you want to move on this, I suggest we get together with any other interested parties to come up with a revised candidate then get it into formal review and publication.