BTW: Has the topic of a game manual / adventurer guide / survival guide been discussed here before?
I’m fairly sure it’s been mentioned. Certainly in-game help such as bestiaries, codexes and just generally better tutorial and in-game info on various aspects of the game have been. I think integration with D&D Beyond has also been a suggestion. Personally, if I had to choose, I’d prefer information that was integrated with the game to a separate guide, perhaps with links to external WotC sources like D&D Beyond for more info. But if I didn’t have to choose, then I’m sure I’d enjoy browsing an adventurer’s guide too

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