I have finished the game and have to say I'm very disappointed. I was very open to the idea of a mainline FF action game, but FF XVI is neither a good RPG nor a good character action game. The system is very limited and quickly get as repetitive as the encounter enemy variety. And without scoring or elemental weaknesses, as well as the fact that when you die mid boss, you can restart with full health while the boss only have 50% health left, it seems like the game doesn't want you to engage with its system, which is very weird to me.
Despite liking some characters (Clive and Cid, mostly). I feel that the writing is very meh, most female characters seem to come from a 2004 video game, and the story borrows heavily from Game of Thrones, except Game of Thrones wants to subvert fantasy tropes and FF XVI does not. Also it's a bit weird that the game sets up something during its first half, only to say "it doesn't matter anymore, do you like magic lol" during its second half. The fact that the gameplay is never here to convey the story, except during a handful of moments in the game, makes the whole thing feels a bit dated.
The level design in general, but especially in the "dungeons", is kinda awful : corridors, false choices, all the rooms look the same so you have to rely on your dog because of course there's no minimap. There are some highs in the game, though, like some fights, some characters and such, but the rest is so mid that it never feels earned. Like, yes, the Eikon fights are spectacular, but because the gameplay during them is so basic, they're never epic.
I'm sorry to be so negative, maybe I was too hyped, and I'm genuinely happy for those of you who like the game, but to me it's a big disappointment. Not awful by any mean, but a 5 to 6/10 game at best. I think that if you wanna play an action-oriented FF game, Stranger of Paradise is a way better choice.