There's also a lack of agreement from media, players, and devs on what the key pillars of a Final Fantasy make a Final Fantasy.
The easy ones that everyone always expects:
Banger visuals
Great story
Sick soundtrack
When it comes to the gameplay part it gets skewed. Growing up there was a big world to explore, secrets to unearth, new abilities and spells to obtain, and a sense of gear progression even if it was very linear. As the industry of games has moved forward I would've liked ALL gear in a FF game change my character visually like a souls game. New armor, new weapons, etc. I want there to be a few, not necessarily a lot of these, that create variety of strategies. Maybe your character is going for a Dragoon build, but there is perks to using a lance vs a spear vs a halbred. Within that they can create a wheelhouse of depth that seems natural for the series.
This game is NOT that based off of what we are seeing. I'll be surprised if the combat and progression amounts to much for the player to consider. I imagine the combat will be simple and flashy. I expect the areas you explore to look great, but be dull and fairly linear.
Ultimately if the combat can be FUN to the end of the game, and the story is good from start to finish, then it'll be a dub, and something they can build upon for future titles if this change in gameplay is received well.
Otherwise, just do 2.5HD remakes of all the old FF's up to 6. Ocotpath Traveller 2 IMO is such a knockout, that seeing something like a FF4 remake akin to this with advancements would be a blast.