This is what I was concerned about in the discussion thread about evolution for these new features:
If this is the case, and it sounds like it is, aspects that the Core Team will not be open to feedback on should be clearly communicated to the community as part of the evolution process so that members to not find themselves wasting breath on things that the Core Team is unlikely to consider. I myself find the magic and relatively unreadable nature of the wrapperValue/$foo syntax a big downside of property wrappers, but would not have continued to voice my concern if I had known that this aspect was already decided.