I imagine the long term strategy will be to selectively optimize feeds based on user prefs. Not everyone values intimacy and some people prefer BuzzFeed cruft on a daily basis.
Unfortunately intimacy is hard to measure while sharing and content generation makes for easy KPIs for exec to focus on. Focusing on these will treat the symptoms but not the cause. In fact if sharing and recirculation is a KPI then FB will increasingly gravitate toward Twitter.
However this is all backwards. Monetizing the users is a piss poor business model. It fucks up the UX and alienates the users. FB should move to other avenues. Personalized search or ecommerce or premium SMB accounts should be the bigger focus.
Aside, their move into messaging reminds me of Microsoft's play when they leveraged Hotmail users into MSN and virtually overnight, uprooted ICQ/AOL.