I put some hours in, and will echo some of the good and negative points people have already mentioned, from bad to good:
Graphics + Music: Not a fan, I really don't think it looks that good. Music gets old quickly, but then again it also means I find it not so annoying after a while. Sometimes it actually fits the mood quite well. I don't disagree on the fact that a volumer slider for music alone would be great.
I got used to the character models by now, and I actually kinda enjoy the music-less slow cutscenes. Vandham looks really good, in my opinion. The voice acting also saves the complete lack of mimics, my god.
Art direction is amazing though. The first time I left NLA on a mission, I got lost. Bad. But it was fun. I met so many fluffy and scary animals. Haha. Really amazing. Then I tried to swim, but got nowhere. I am a bit lost sometimes to figure out how to get places on higher levels.
Controls + Battles: Fighting with the controls, but that is just me in every game. I am a klutz. I am dying a LOT right now, but that is because I am still trying to understand the battle system.
I haven't played the first game, and am still figuring stuff out, like to avoid melee unless the mob has fallen over, to keep changing positions, and I need to start hitting the button prompts on time. (And need to find out how to revive fallen team mates.)
Rhythm + Feel: This I like most so far. The game has a cool rhythm, urgent, but not stressful. It gives you things to do, and also time to do them. I picked up some side missions, and geared up before leaving NLA for the first time, and just when you start to wonder if this mission is worth doing, it picks up and introduces new elements or challenges.
It's feels so broad, and most things feel worth doing, or skippable for some time until you feel like coming back to them. This really attracts me in this game, and makes me want to get better at it, so more things open up for me.
It's weird, I put nearly 4 hours into it, and just started my first real mission outside NLA (Nelson's Team). I still don't know half the systems, or what my division actually does. Looking forward to spend more time with this massive beast though!