I know a lot of people are down because of the fanservice but, as someone who tried some of the PS3 games (Sophie, in particular), I'm drawn to this one because:
The combat system looks interesting (it's like going from FF10 to FF13 in difference, at least appearance wise. I'm a big fan of 13)
The gathering system looks fast for what it is.
The animations in combat look really good.
The story looks like it might actually have a direction with intensifying stakes besides slice of life.
The Switch port looks good (though I may get PC anyway. Still deciding).
It's a Fresh 'Arc'. Since the games are always sold/told in 'sets', if I don't like the first, I'm far more inclined to ignore the whole thing because I like to have the full story context if possible.
The only downside to me, as someone not invested in the series and acknowledging, but not too hung up on, some of the overly sexual design of some of the girls, is that they don't dub these games anymore.
I've passed up plenty of games heavy in fanservice for being bad (Hello, 90% of Compile Heart's output), and while I don't begrudge people that think the thiccness is the only reason people are more interested in this, I just want to put out that there are other reasons people would be more positive on this one than just anime ass (though shoutout to Japan for giving a girl some cake).