Followup, FWIW: I tried following up with “Support,” asking if there was any chance of a Rare quest appearing this week.
Reply: Another set of links to the forums (“where you may find information!”) including specifically to the official SG calendar (which, of course, does not actually mention the Rare quests).
I have written back pointing out that they have not actually answered either of my questions and that (1) I am quite familiar with the forums (2) I also would like to understand the decision making process, and, of course, ideally see a Rare quest this week.
I’m not really expecting much, but I suppose I am mildly, or morbidly, curious whether I’m just being botted, actively trolled, or if there is even a difference…?