Well written post, with many ideas to improve the community!
Probably the most difficult thing is to populate social media with fresh, 100% original, user created content.
it's quite hard to check if a content (specially images, animations, music) is really original or taken from someone else.
Furthermore not everyone of us is a painter, photograph, musician, etc to provide 100% own generated content.
So we need a clear policy, also about using free copyright contents.