Yes, but I would not hesitate to irritate them, by suggesting an amendment to the Supreme Court Act directly. If you wanted to be very clear and say that judges must not only understand French but also be able to speak French, you might have to use other means than section 16, which has its share of ambiguities.
Section 16 says that judges must be able to understand a language; it does not say that judges must be able to speak a language. If we really want to be clear, we could choose to insert a new definition in the Supreme Court Act that would say that judges have to be able to speak in English and French in order to be appointed to the Supreme Court of Canada.
That brings us to the issue of language level. That is the issue you discussed this morning, I understand. I am less qualified in that area.