aco175
Legend
Skip them. Do not use them if they have become bland or repeatable. Save them for another campaign, even if you like them- as the DM and not a player.
Don't have the PCs as the chosen ones. They are exploring something else when they stumble upon the real chosen ones who are dead. They have the option to take up their mantle and continue.
Have the chosen ones be corrupt and the PCs need to stop them. They could be tasked by one of the real chosen ones to find some McGuffin as a minor quest and come back as a quest-giver. Eventually the PCs learn some information about one or all the chosen ones that forces the Pcs to choose a side.
Don't have the PCs as the chosen ones. They are exploring something else when they stumble upon the real chosen ones who are dead. They have the option to take up their mantle and continue.
Have the chosen ones be corrupt and the PCs need to stop them. They could be tasked by one of the real chosen ones to find some McGuffin as a minor quest and come back as a quest-giver. Eventually the PCs learn some information about one or all the chosen ones that forces the Pcs to choose a side.