So, by saying WONTFIX you are saying one of 2 things to me:
  (1) use some other tracker that doesn't put Precedence: bulk
      on email headers or has an option to remove it, or
  (2) continue to locally patch roundup to remove it so that
      our mailman (managed by another group) will pass our
      mail instead of silently dropping it.

I don't understand why there is resistance to adding a config option 
to not allowing this mail header attribute to be optional. Nobody is 
suggesting to drop Precedence entirely, only to make it a config 
option.