I dont think so that facebook will create his own cryptocurrency. For what? Yes it would be much easier for people to transfer money, but i think the people of facebook and many other big companys are not convinced by cryptocurencies. So they would either have a partnership with visa or paypal or any other companys who make digital payments instead of a own cryptocurrency.
Why do you think so? I really think that its cool idea, we need just to wait till finish the whitepapper, and than have a discuss.
Not possible I think because it cannot happen that facebook create their own coin, there will not much users to get advanced benefits from the coin, there have been so long people were say if that facebook will create their own coin, I think people have better option in forum of bitcoin so why they will try any other coin than bitcoin these days so I think facebook is a wise website they will not make this kinda decision.