As someone who enjoyed the original game, but disappointed with 2, I'm really enjoying the game after spending a day with it.
My only issue is that exploration can be a bit tedious. For instance, all the side content that isn't a mission doesn't appear on the main map, making it difficult to track what buildings I've cleared and which ones I have to revisit. The location of collectables is a bit difficult to tell at times on the minimap, as there's no indication on the vertical position of it.
Then there's the locked buildings, such as the nightclub in the first area and a few of the high-end residences in the second. Perhaps it's something that is taken care of through side missions or story progression, but then it could be needing to hunt down specific keys that otherwise have no indication of. Same with the locked crates, though I suspect that plays into the same guy who you can use to call down artillery from all the previews. I guess I shouldn't complain too much since I have much more to go on in comparison to a Souls game.
Otherwise, everything is an improvement. Combat feels great, especially with the delightful super combos and vehicle combos. The two boss battles (Garden of Peace and Ch. 1) have felt far more fair to the player than the past two games, with dodging actually being useful and a clearer indicator of how their health is affected.
And those survivors...they're pretty meaty to where I originally felt that they were too tankish, but the flux of AoE weaponry in the game makes it rather balanced. Otherwise, they'd likely be dying left and right between all the weapon and vehicle play despite whatever caution the player would demonstrate. They might be a bit OP for boss battles since the first survivor you come across trivialized what was an already easy fight in The Garden of Peace.
As for the story and aesthetics, I can't complain too much. Nick is likable, though lacks the personality of Frank West or the personal agency of Chuck Greene. The grim aspects contrasting with the relative over-the-top characters and corny dialogue is well-balanced, though the latter elements somewhat hurt the rather bland cast since lines seem to be dropped for the sake of drops, rather than giving the characters the intended personality.
Overall, it's one of my favorite games of this new generation, and a step-up over the past two games in gameplay.
Edit: This was XBO. On a note of technical issues, the only thing I've noticed was a zombie in Ch. 0 floating up in the air facing down after being killed. Haven't noticed much in texture issues or loading problems.