For me the implications of a character-action focus are what im mixed on. I love party mechanics and systems you have to really mess around with and learn. Managing, organizing, and coordinating a party is one of my favorite things in jrpgs. With a character-action game you really only control one character with the trade-off being more complex moment to moment inputs. It's asking you for completely different skills.
I adore games like DMC5, Bayonetta, KH2 and 3, etc, but I don't feel like I am under-served by that genre.
One of my favorite aspects of FF (and jrpgs) are the parties of memorable characters you play with and watch grow. I'm a bit wary that this game has seemingly focused so heavily on single character gameplay. But we know almost nothing about the game and im sure we will be surprised as more info is revealed.
Other than that i think 16 looks fucking amazing.
Its also interesting tk note that 7R's combat is almost a perfect realization of the old turn based system in an action context. The design of each mechanic, and the way they interlock with each other, is incredibly well realized.