To each his own... These sites have no "more knowledgeable" users, and don't have any intentions of using any MUAs beyond Outlook Express. In another situation, sure, what you're describing makes sense.
It's never a good idea to assume that all of your users will remain completely clueless...
There is another big advantage to my method - it requires absolutely no coding, no need to maintain a patchset or attempt to get a patchset integrated into the distribution. Just manually add an explicit 'anyone p' ACL to every existing mailbox and every new INBOX you create. It will be inherited automatically by any new sub-mailboxes. (INBOXes have an implicit 'anyone p' which is not inherited. Making it explicit will enable the inheritance.)
-Pat
"Reserve your right to think, for even to think wrongly is better than not to think at all" "To teach superstitions as truth is a most terrible thing." -Hypatia 370(?)-415 AD