Great. For the listing, honestly I remain on my positions. A possible
exception, which would probably solve your problem and at the same time
not hinder what access is being applied to data is to design a new
access privilege that means something like "disclose to internal
operations". This would need to be explicitly added to data that one
wants to be accessible by internal operations but not directly by
regular ops, like in your case. What I don't like of this access
privilege is that it's too generic: it doesn't allow to tell what an
internal operation would do with that data. For example, an internal
operation may want to modify it, or give it away or so. Note that I
have no idea (nor intention: I still remember how much I had to sweat to
add "add" and "zap" privileges!) of how to implement it, right now.