Thanks for posting this, I would otherwise have missed it. It generally is pretty interesting for someone like me who used to live in Europe, uses FB and then moved to the US (while sticking to FB instead of switching to e.g. DL SkyMiles).
I wonder if you get the 60 XP only once or once per year. I do not really see the point of it being a one-time bonus. It would certainly be nice to get it every year.
Luckily the US has a couple of other interesting travel credit cards, but it is always great to have a choice. In this ballpark of annual fee the Chase Sapphire Preferred comes to mind. The advantage of this FB BoA CC is that you collect more miles with FB directly if you purchase a lot of ST airfare.