Sure I've had a similar desire, but since Perl doesn't allow us to do what you want to do, I don't do that. :)

If I really want to comment a list, I don't use qw(). Anything else that I might do is just added complexity that I don't need and will probably confuse later programmers.

do_something($_) for (
  'foo',
  'bar',  # introduced November, 2005
  'baz',  # deprecated - remove by December, 2006
  );
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