Ok so I finally beat the game today, way later than expected but I had some things going on that prevented me from playing as much as I wanted. Anyway.
I think it's my favorite of the series and probably in my top 3 Switch games, arguably the best exclusive on the system. It's an amazing game in many ways but mostly in its overall tone, themes and general atmosphere. I've searched for words to describe it but could only come up with "elegant". As much as I love Xenoblade 2 it's hard to deny it was quite a gaudy, sometimes ridiculous game but 3 is the complete opposite. It deals with a lot of tragic situations but always does it with a lot of restraint and the result is an emotionally very powerful game. The atmosphere is also much darker, to the point it sometimes reminded me of the Nier series, which previous titles did a bit (the land of Morytha is an obvious example) but never to that extent. The OST obviously does a lot to evoke this comparison, with one of the very first themes setting the scene appropriately: Everblight Plain is an incredible piece, plunging you right away into the characters tragic lives and making you understand this isn't going to be a lighthearted trip.
Speaking of the characters, I found all of them likable and felt for their plight in ways that basically never happend in the other RPGs I've played. I don't think I've ever liked a main hero/heroine duo as much as Noah and Mio, but the other main party members are also remarkably well realized and even the tertiary characters like the heroes are strong. The writing is of course excellent but praise should also be given to the directors of the numerous cutscenes because they're all of exceptional quality and greatly enhance the whole package.
Gameplay wise the game does a lot of good things to fix the annoying issues of 2, with far less cumbersome exploration/traversal mechanics and individual quests. Gacha is also thankfully gone and combat has also been simultaneously streamlined and expanded to the point the amount of options at your disposal can sometimes feel overwhelming. I'm not that good at it but I'm sure there're ways to create absolutely busted combinations with all the different classes, heroes, items etc.
Finally an assessment of the game's qualities obviously wouldn't be complete without mentioning exploration and world design. Simply put Monolith Soft demonstrated once again they're the absolute best in the industry when it comes to crafting interesting worlds to explore. I've seen some people claim the environments in 3 were inferior to those in previous games and I can't disagree more. The variety of biomes, the way the world lays itself out, the mindboggling number of secret areas (sometimes entire subregions) you can find if you're curious enough, the sense of scale and coherence of the entire map, very few studios manage to do what Monolith routinely pulls off. That being said I'd lie if I said I was entirely satisfied with it. During my entire playthrough I couldn't help but have a nagging idea at the back of my mind that didn't exactly ruin my enjoyment but still bothered me and in a way it's not entirely Monolith's fault.
Here it is: this game more than any other made me fully realize the Switch is an obsolete hardware that actively works against its most ambitious titles. I said that Aionios was a phenomenal world but I also couldn't help but think it could have been ever better. I've lost track of the number of times I've experienced a mix of awe in front of the vistas crafted by the devs and disbelief at the literal N64 level textures and geometry on display. This is not a trivial issue, the sense of wonder at the strange beauty of the worlds is one of the key appeal of the Xenoblade series, and it's definitely impacted negatively but the limits of the Switch hardware. I couldn't stop thinking this game deserved more powerful hardware and lamented the still mythical nature of the Switch 2/Pro whatever you want to call it. On a pettier note I also thought it was a shame the animations outside of cutscenes still didn't improve (the way characters start running out of nowhere is still particularly jarring) and I also thought the game was too easy, although it's obviously because I made the mistake of raising my characters levels in camps. That's about it for the flaws really.
Overall, Xenoblade 3 is a masterpiece of its genre and definitely Monolith's best work. It abandons the more shonen anime aspects of the previous titles and even the more philosophical, pseudo-gnostic themes the series is known for are far more subdued in order to tell a much more personal, human centered story. It's a dark, tragic, grandiose game, but it's never nihilistic and depressing, always stressing the importance of hope. I genuinely love it, and can't wait for the DLC.
9/10 would buy again