the animation quality definitely looks better than season 3 from the trailer, which is very encouraging. I like the character designs better than s3 and hopefully there won't be any wonky backgrounds this time.

the other main issue I had with s3 was that for me it lacked the emotional depth of the first two seasons. the emotional story in Yuru Camp is very subtle, but very impactful when done well. the same director from s3 is staying on for s4, hopefully we can see some growth from them. it may also have more to do with the material from the manga that they're working with, I don't read the manga so idk.