I'd give it a 7.5/10 or 8/10. I had fun. Here's my review with some slight spoilers.
spoiler
The Good
It's a completed game. It has a full story that you can easily follow along with. You even get a neat interactive encyclopedia that you can easily check with a button in cutscenes if you need some context. No outside media needed. FUCK YOU FF15!!! (Seriously, FF16 gets extra credit just for not dealing with all the bullshit that FF15 is.)
Clive is cool. I really liked him as a protagonist.
Boss fights and the S rank hunts are amazing and fun and make the combat shine.
Music is excellent and hype.
I loved the companions and all the side characters from the hideaway.
The Borderline
Combat is fun, but it is rather easy and lacking depth. Some of my favorite action combat games are Kingdom Hearts 2 Critical Mode (perfect game) and I really enjoyed FF7 remake's combat. FF16 isn't quite up to the level as those two, but it still is pretty fun.
The first three stances they give you are really good and I didn't feel compelled to try out the late game stances since the first three get the job done already. I'm sure there's a more optimal combo out there, but I didn't feel compelled to experiment since the game didn't give me a reason to switch it up.
Story drops off in last half and turns from a Game of Thrones medieval political intrigue into your standard JRPG attack and dethrone god story. It's still fine and all, but I liked the political build up of the prologue and first couple of chapters.
The Bad
Eikon battles overstay their welcome. Very cool visually, but I didn't like sitting through them for 10+ minutes doing QTE's.
Pacing is atrocious. Might be my fault since I did 100% of side quests, but you'd go from big main story line quest that is hype to easy mmo style fetch quests that stop the pacing to a grinding halt and can last hours between big battles.
Side quests are like FF14 fetch quests. They help with world building and lore and character development, but I don't know if the world is worth knowing.
Gear selection and RPG mechanics/decision making are absent. Just craft the best weapon and armor and move on. The accessory selection is pretty poor too and not interesting.