Myspace was great. It was pseudonymous, spent precisely no time trying to hunt down and delete opinions or nudity, and didn't have much of an opinion about how you kept your page.
Social networks could ideally be usenet without an eternal September (which is the actual thing that killed it.) You grant trust to your friends, a little less trust to your friends' friends, and a lot less trust to their friends and strangers. Without a real name policy, you can maintain different identities as different pages and can have a different account to be friends with your aunt. With very little cultivation, you can make sure everything you read is stimulating, and very little is annoying. The problem with this model is that the business of the internet is to annoy you, and the first thing you would cut if you had the ability to cut would be the messages that the platform is paid to subject you to.