I don't think so. There are some other mails (like https://marc.info/?l=openbsd-misc&m=142563704303304&w=2), but I also think now I should've used a different quote.

Not really. There is this list [0] of security considerations for ports, which is a good starting point. Everybody writing in the same style [1] doesn't hurt either.

[0] http://www.openbsd.org/faq/ports/guide.html#PortsSecurity

[1] http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man9/...