> After reading your msg5532 carefully
> Is still don't know what you are proposing:  Is it simply an addendum to
> the research done by Tom last year and posted as:
> http://issues.roundup-tracker.org/file1568/precedence-bulk.txt ?
> If yes then I propose we should close this issue with
> Resolution "wont fix".
And I thought I was clear...
It is a more thorough research, and the conclusions are marked "C<n>)".

And they are that we cannot drop the header now and shouldn't be doing 
that to solve the original problem;
neither letting a user set it makes much sense.
So it's indeed WONTFIX.