A good messenger expects to get shot.
Accidental stacks considered harmful.
I'm afraid my gut level reaction is basically, proceed is cute, but cute doesn't cut it in the emergency room.
Part of language design is perturbing the proposed feature in various directions to see how it might generalize in the future.
An initial underscore already conveys strong feelings of magicalness to a C programmer.
It's certainly easy to calculate the average attendance for Perl conferences.