Instead of Facebook flailing about trying to come up with the best news feed algorithm to please everyone they should just give the consumer a choice. Imagine an "algorithm store" that lets developers build and publish ranking algorithms that users can buy and use.
That's won't happen. The mistake you're making is assuming that Facebook wants to "please everyone." It doesn't. It only cares about pleasing itself, and it does that through manipulating the algorithm to attempt to get its users to do what it wants.
Giving up control of the algorithm means giving up control of its user-products, and it's not going to do that.
