It's gonna be hated just on basis of it being Final Fantasy, especially Final Fantasy XIII. Yet despite the number of hate threads to people who like the game, it will still sell because the fans just don't feel a need to scream about it on the internet. Especially cause the haters and Yahtzee sheep chase 'em out.
I feel like the overall feel of it being a "Final Fantasy XIII" game is lost. Something about XIII-2 and Lightning Returns just seem like completely different stories. There doesn't seem to be a good flow between them ya know? =/ Story-wise, I thought XIII was great. XIII-2 was sort of a let-down. LR doesn't look completely terrible...I'm hoping this new system gives the game some more "dynamic." I'm most likely going to buy it just because I'm a die-hard for the stories and i loved XIII. Let's hope LR is somewhat of a redemption.
Ultimately, I think SquareEnix is a crowd pleaser. Which isn't necessarily a bad thing. Obviously, they're going to want people to buy their games and when it comes to Final Fantasy they'll want EVERYONE to be pleased. I think that's why they keep going with this particular title (besides furthering the storyline). I think it's worth giving a try : )
Actually, I don't listen to the masses. I do however know a few people that I trust who can speak very strongly on the topic in a very logical manner. Thus, I'm not betting on it being fantastic. And considering you're using Lightning as your profile, how am I to not know that you might be biased towards the XIII series?