Ok, if enclave is overused, why ghouls, super mutants, giant ants aren't overused, Enclave doesn't have to be in any quest, but even if they would, ghouls for example were in lot's of quests in every fallout game. And if you want to say "they were destroyed" Maybe they were bigger than you think? If you'll kill/destroy the president it doesn't mean that there will be no more enclave, probably BoS was saying that they are dead, but they don't need to know everything.... Brotherhood was in every game and you don't say they are overused
