You told me that I had made a
very poor GMing decision by including WoHS in my GH game.
The closest you have come to giving a reason is that you think changing the setting while still calling it a game set in that setting (rather than "alt setting) is disrespectful to players.
If that's not the reason you think that I made a very poor GMing decison, than what is the reason?
Which players? All players? Your players? My players? Do you think you know better than me what expectations my players have? If not, do you think my knowledge of their expectations is more important than your conjecture about it more than 25 years after the event?
I have no idea what I didn't or didn't know in advance - it was March or April 1990, so nearly 27 years ago. One PC at the start of the campaign was a magic-user/illusionist type of some sort, and the character's NPC mentor was a Black Robe wizard on the run from Nyrond, but I have no idea whether the mentor's Black Robed-ness was established at the start of the campaign, or whether it was introduced at some later stage.
As far as explaining the setting, I will have made assumptions based on what was typical for playing a fantasy RPG in my community at that time. In 1990 the sort of modern obsession with canon that one encounters didn't exist, at least in my RPGing community. There were not reams of FR novels - perhaps a dozen or so (as per
this website) and I doubt that any of my players had read them. As far as FR sourcebooks are concerned, there was the Grey Box and the hardback FR Adventures. (And
two others, according to Wikipedia - I don't recall ever seeing these at the main RPG shop in Melbourne, but maybe they were in circulation.)
Outside of the classic modules (plus Fate of Istus and Vale of the Mage, which again I don't recall seeing in shops at the time - I'm not counting as GH canon the ones like Child's Play and Gargoyle that had nothing to do with setting itself), at that time canon GH
was the folio, the boxed set and the CoG boxed set, plus some articles in Dragon magazine most of which I'd never read, let alone my players. (No RPGer in that part of the world, at that time, would assume without asking about it that stuff in Dragon was being used in a game, given that most players and GMs would at best be casual readers of the magazine.)
DL was the most canon-errific setting around, and I wasn't running that. Some of my players had experience with ICE's Middle Earth, and so were quite familiar with an example of building a setting around canon.
In other words, the norms around what "setting" meant at that time, in that place, among those players, were
absolutely nothing like what you seem to be assuming. I suspect that I would have said something like "I'm gonna run a game set around GH city - whose interested?"
Do you want to revise your criteria for what it would mean to be disrespectful in those circumstances?
What he talks about is not the only way to manage expectations. And he makes assumptions about expectations that, as I said, seem to project his experiences onto the population of RPGers in general.