Frank has definitely grown as a character, but still has plenty of flaws that drag him down. I really want him to find peace in his life, but I guess the idea of the show is that that will never happen. I especially feel bad for Sue as well, and how she feels her life has gone to waste. For how long can the writers keep them in a constant cycle of misery? I guess their problems were solved, it would betray the show's premise.
I like how the kids are the characters who have had the most growth over the series. Kevin is definitely my favorite of the cast, and I genuinely liked seeing him trying harder in school and meeting that girl. Bill also suffered a lot less this season, and seems to have channeled his trauma into sheer badassery. I also liked his arc with Jimmy. I'm indifferent to Maureen.
Besides Vic, I think the neighbors are the weakest part of the show. They got some depth, but I was glad they weren't as prominent as they were last season.
I like the show, but damn do the writers hate Christianity and white people. Although, it is Netflix, after all.