BillM16:
Unless I'm missing something on the prior posts on this subject, you and Brian have introduced the "missing link" that best describes the violation of checking the nuts. Your first 4 words on your proposed rule, are absent on other posts: "On the final street...." That's what we need. I might change "with the strongest possible hand" to an unbeatable hand or better yet, "the exclusive nut hand" must bet or raise.
On the FINAL street, and when LAST to act, any player holding the EXCLUSIVE nut hand MUST bet or raise, to avoid a mandatory penalty!