If you can provide any further arguments, it would be best to reply to one of the previously existing bug reports (although it would be better if there was just one). I suggest you reply to the first one with the most comments: FS#970
. I doubt that the decision to not implement it will change, though.
Alternatively you could also provide more information on the security page in the wiki to make new users aware of the potential problem. And you could provide your patch in the tips section.