Is it really though? Outside of japan of course. Seems like SE ran the franchise into the ground everywhere else.
Don't care about any of the FF XIII games or the upcoming Lighning game but I'm always curious to see what they do with the new mainline FF game. I think it really depends from what they are going to show us and what the game will be like.
I'm sure many will check out the trailer and if it looks promising people will get hyped and buy it.