Finally finished season 6 (was waiting for the complete season to go up and then needed to make time to watch). This felt like a solid season to me. I think overall, seasons 1, 4, 5 and 6 were my favorite. Adding Silver to the mix really rejuvenated the show for me after season 3 (I liked them exploring Kreese and Okinawa in that season but the snake pit stuff really was a disappointment for a character who is supposed to be rattled by the grim realities of The Vietnam War-----I think what made him work so well in the first movie was he could be a bit cartoonishly evil because he was grounded in something very real). But that said, I get the show embraced the over the top elements of part III and II.
Also I do have to say they did a good job of establishing this show could end any number of ways. You really didn't know if the main cast would survive, and they did that very carefully laying little doses of groundwork in earlier seasons and episodes (it is a refreshing contrast to shows like Game of Thrones and Walking Dead, where there was just too much overkill in that respect). Here it was just enough so you couldn't be sure if Johnny was going to win the tournament or have his neck broken.
I liked the Kreese redemption. Not sure how I feel about the boat fight with him and Silver (I think Silver could have had an effective redemption story through Kreese's efforts). On the one hand, it fits the cheesiness the show has established. On the other I would have liked a more grounded resolution for those two character (especially given their background together in Vietnam). But that said, Silver is such a fun, larger than life, villain, I enjoyed every episode he showed up in. And Kreese had a nice send-off with Johnny
Some of the high school drama was annoying, but I also get this is a show that is multigenerational and they are trying to appeal to younger and older audiences at the same time. For example I connected a lot more to stuff like Chozen's quest for love and the relationship that forms with him and Kim Da-Eun or Johnny and Kreese's arc, than things like Demetri breaking up with his girlfriend. However, I imagine for younger people in the audience, they might have the opposite reaction and the show does a very good job of balancing those two sides