Mr. Game&Science
Terrarian
When people use the Guide's crafting tab, they can see items that can be made with materials that they have no access to, like the mech boss summons that require a mythril/orichalcum anvil and souls of light/night to make, or other hardmode items/weapons. I think that this should be based on what bosses you've defeated, or they should be obscured until a certain point in the game.
For example: The Zenith's crafting recipe should be partially obscured, only having the copper shortsword, enchanted sword, Starfury, Night's Edge, and Bee Keeper shown. After you get into hardmode, the rest of the swords needed will be revealed, with hints to how to get them, like for the Seedler:" Defeat an overgrown plant after breaking a glowing bulb in the underground jungle." Or for the Horseman's Blade: "Defeat a terrifying menace after using a Pumpkin Medallion" or something like that. I just think the player shouldn't be aware of certain points of progression way before they get even close to that point, so they can have something to look forward to, but won't have a general idea of what it will be.
For example: The Zenith's crafting recipe should be partially obscured, only having the copper shortsword, enchanted sword, Starfury, Night's Edge, and Bee Keeper shown. After you get into hardmode, the rest of the swords needed will be revealed, with hints to how to get them, like for the Seedler:" Defeat an overgrown plant after breaking a glowing bulb in the underground jungle." Or for the Horseman's Blade: "Defeat a terrifying menace after using a Pumpkin Medallion" or something like that. I just think the player shouldn't be aware of certain points of progression way before they get even close to that point, so they can have something to look forward to, but won't have a general idea of what it will be.