I find the animation to be a bit more expressive, which isn't necessarily better or worse (compared to the previous style's emphasis on realism) but just different. Though I prefer it because it's closer to the manga lol
Sakugablog did a cool article around the time season 4 began airing that does a good job running down the production differences and how the show has evolved and what their emphases have been: https://blog.sakugabooru.com/2020/02/04/the-evolution-of-haikyuus-exceptional-production-refining-reality/
Oxbox
2020-09-10 21:17:35 +0000 UTC
Haikyuu makes me smile not matter how many times I have seen it. Its such a feel good anime.