These are great points. Facebook's (stated?) goal is to represent real world human relationships and connections online in some way. That is complex and messy

These are great points. Facebook's (stated?) goal is to represent real world human relationships and connections online in some way. That is complex and messy as humans are complex and messy. Facebook should not get rid of its myriad of privacy options as it's already built-in and necessary for way Facebook took off and grew (the whole point of Facebook was that it was private for college kids). It does certainly face very difficult UI and user training challenges that need to be solved sooner rather than later, if it can be solved at all. Twitter took another POV and just threw the complexity out. Definitely hippie ("can't we all just get along") and definitely simpler and easier from a UI and back-end perspective. Not as useful, but you know what you're going to get.