Okay okay okay despite what I said about loving Hinata's new look (I still don't take that back) I do wish we got to see more of him with his 3rd year hairstyle. Look at this perfection:
If there's one word I could describe the haikyuu timeskip with, it would be realistic. Some people look better, some people look worse, some people haven't changed at all. Seems overall believable that they would age like they did. Also most of the side characters look just a bit more tired in the timeskip. I personally disagree with the post, but some characters did have a glow down, be it drastic or not.
My favorite timeskip is Tenma though. He can be described with "same sh*t, just a lot more tired."