ask for it to be demonstrated. The usual mechanism for
this would be to ask for some reasonable number of "yes,
advance it now" comments and few or no "no, not yet"
comments (*ideally* with alternative suggestions, such
as "examine and incorporate these edits I have written"
or "because I have written what I think is a superior
draft, which I have submitted in the usual way", which
will trigger actual work in the working group, per the
charter).
Being late in the discussion (and new to the discussion), I would like
to second Brians comment - if the draft is to move on, change
MUST/SHOULD etc to must/should. Appart from that, I don't see a better
starting point at the moment.