Did you Nancy Drew the right Ben Starr though?
Over the last two years, and especially the past few months, I've been equal parts fascinated and annoyed that people are once again grappling with the identity of the series, arguing in their minds and online over "what is and isn't FF". For a series with 16 unique iterations, it's amazing that this is still an issue.
As stated none of the prior trailers really appealed. Just looked like GoT or some edgy renaissance faire stuff. This trailer showing a group of people preparing for a fight against something was the first time any of these trailers felt like a Final Fantasy to me.
I don't have the "omg chills hype," but it was always a given that I'd be getting the game, and this was the first trailer that made me think "there we go."