I can imagine an assistant built into a client which you could just explain your feed preferences and interests to; "show me less about ____", "I'm interested in _____", "create a feed of my friends friends", "What are my current feed's parameters?", "hide ads about _____", etc

Could be expensive though... but in a future where we control our own feed curation, making it tunable for the average person would be very cool and a solid usecase for LLMs.