I understand i played through the game twice, and they felt really different from each other. But the stamps are a nice hint for things I might have missed. But you do have a good point.
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they were def intended for those like you to have a general idea of the amount of content in the game, but I had a ton of people join my server just to ask about getting all of them, and they didnt care about serects outside of them, and were really frustrated about how niche some were when the point was to make runs special and acknowledge niche choices. some were pretty nasty about it. its definitely unfortunate but I think the only way to overcome completionist mentality is to remove them so the only people who see secret scenes are those who search for the mere want to see them; and that way youll know the only people who've seen the ones you've found are others who made the same choices / had the same smart ideas and were rewarded for it. I thought about having a healthcode to turn them on for curious people, but decided not to. it took a lot of consideration before i pulled the plug for sure