This sounds too good to be true. Its like more stuff to do. More Weapons to fight, a combat system that combines functions from Star Ocean and FF12. All cities from original to explore and now those are even bigger.
The only bad thing is that it splitted to 3 parts. Its like Starcraft 2, when the last episode came nobody cared anymore.
SquEnix and some fans now seem to claim FF13 and it's 2 sequels was meant to be 1 long story. Obviously not the case as that story was finished if not half arsed. It may have the same effect on sales however here. FF13 sold millions on expectation. FF13-2 and 3 together didn't sell as many as FF13 did. Which means more than 50% of people that purchased 13 didn't play it's sequels to 'complete the story'. People buy the first expecting certain things, get disappointed and don't by the follow up games but those people will be willing to buy FF16, 17, 18 etc. They are interested in the new entries not the sequels to iterations.
It's the same effect CoD and even Assassin's Creed has, each game involves similar gameplay but the central story, characters and 'era'. Each game is different. While SquEnix for some reason are going down the 'make a game and release sequels', Activision and EA are actually going down a original FF route of similar gameplay but different game with many of it's franchises now.
It's the reason I'm far more interested in a new Dragon Age game now than I am of a new FF game because i know a new Dragon Age will be similar to DA:I in gameplay but different in setting and characters.