As much as I enjoy a ride or two on The Bat, I do see it leaving in the next 10 years or so. I don't see it being the next to leave but due to its location and such, I do see it leaving. I could see Invertigo leaving next which sadly would bring Congo Falls down with it. As much as a good ride on Congo Falls is on a hot, busy, summer day, it takes up a lot of room in that area for such a simple ride (a lot of which is que line). Now I could see Invertigo leaving because it is such an unpopular ride that seems to be down a lot when I am at the park including the time it valleyed and was down for a while. Also these boomerangs just seem to be leaving everywhere and even with the Stinger trains, I had multiple rough rides and such that were not enjoyable to me or the other people in the group. This ride is becoming so uncomfortable that even GP are not enjoying it.
Although I do not personally enjoy FoF as much as others, I don't see it leaving anytime soon. It is always a favorite to everyone I know and it always has a long line. Especially after Orion opening this year, there is going to be even more crowds over there naturally. There are of course other options such as a retheme but I think that for now at least, FoF is safe as is.