Facebook is a handy tool for keeping in touch with people, but that's all it is: a tool. Because of this I see this Facebook Home as being a phenomenal waste of resources doing nothing but reinventing wheels that didn't need reinventing. I already find Facebook too easy to use and too accessible so I've basically disabled it.
Sadly this Facebook Home will likely be a hit because of the sheer number of people whose lives literally revolve around this website to the point that they have no life. There are people in this world who literally can't bare the thought of spending an extra 3 seconds in order to see an faded old-time-ie Instagram-edited photo of their best friend's college roommate's former neighbor's lunch.
but that being said a lot of android users like homescreen replacement apps. and this is probably the best, most well done homescreen replacement app. I am much more interested in this than a facebook phone. I am curious to see whether that HTC phone that was discussed will have the option of turning off facebook home and just use default launcher.
Have facebook run my phone, and have instant access to everything that I do with my homescreens and camera ? No thanks, this is way too intrusive. The current setup for facebook is fine unless you want it taking over your phone.