Though I agree with Mike and Steffen on this, I do not think that the LSC should rule over it. In my opinion it should be handled by the PT admin. Its his choice how many STUGs he wants to show up on the Primitive Reference page. If a rule is needed we should add something to the LDraw.org File Format Restrictions for the Official Library on stud orientation in general.
w.
w.
LEGO ergo sum