Somebody said:
Case d) simply makes it easier to PLAN the convention. If I read "Traveller" I assume OTU as written. Finding out that the GM is offering "Flesh Gordon" instead will get me p***ed. So if you offer a non-OTU Traveller on a convention PUT A SENTENCE IN THERE TO TELL PLAYERS or at least be availabel for questions.
But frankly, 99.9999% of all Traveller canonista crises are over matters so trivial that most of the hard-core fanbase would never even know the difference.
I don't see many arguments over "I want to put airships, hawkmen, and rayguns on Regina," but instead impassioned sniping over things like how would a Sector Duke properly notarize an Imperial Warrant, and how many copies would need to be made and where would these copies be filed? Are these records maintained at a subsector level? Sector? What about domain?
The OTU is so huge and diverse, and published canon is so limited and conflicted on even the most developed of sectors, that there is left an enormous amount of room for interpretation, interpolation, and extrapolation. There really are far less absolute rules than many of the canonistas would admit. (And to me, that's just the way it should be.)
And curiously, what I often find is that the canonistas, though they are almost always trying to claim they argue on behalf of no less than the very Authority of the OTU (tm), are usually really only peddling their own pet MTUs.
Is there piracy in the Imperium? Good arguments can be made for both cases, which is why that particular debate has historically been fought with such vigor.
The canonistas, depending on their personal preference and the needs of their argument, will pick and choose what books really constitute canon. "Well of course the DGP books are canon," or "Anything in Traveller's Digest needs to be taken with a grain of salt." Likewise, game mechanics might be relied on heavily to infer on aspects of OTU reality, or rejected outright as "only rules."
I love immersion in fictional worlds and it's a testament to the OTU that it can so captivate the imagination of its fans. But most of the canonista angst is being wasted on arguing over the equivalent of how many angels can dance on the head of a pin.
If you were playing in a rocking Traveller game using any system, would you really get hung up if the GM described Regina -- probably the most detailed system out there -- as a double star system rather than a triple? Would that really ruin your whole day, and prevent you from fully getting into pretending to be a star-faring lion man armed with a machine gun?
Really? How many people do you think would even notice the difference?