[rjknight]

I would really like to know whether this feature gets any (non-accidental) use. It's certainly an important problem to solve, and I can see the technical merit in the solution proposed. What I'm left wondering is how this solution is most effectively communicated to the people who need to know about it, such that they're able to make use of it correctly in the critical moments when they need to use it. For obvious reasons there are probably no good statistics on this, but I wonder what the user research was like.