The lack of resolution at the end was really off-putting. While going through the season, I thought they were doing a really great job layering plotlines and building up to the big Cinco event at the pier. It really seemed like a great way to take advantage of the Netflix format, knowing that many people would be watching the episodes back to back and that this narrative probably wouldn't work as well on a weekly television show. However, to just leave so much left open at the end made the season feel incomplete.
I also really disliked the direction of Michael's character. In the past, he was always the good intentions character, oblivious to the fact that he was just as dysfunctional as the rest of the family. He's still oblivious to the repercussions of his actions, but he no longer had that good will in this season, which takes away the charm of his character. I know this was probably to display his similarities to George Sr. and probably a set up to bring back the old Michael in a follow up season or movie as he tries to repair the relationship between his son (and in turn, the rest of the family). But taking away the 'straight man' character of the show really affected the dynamic of the interactions, and I think it took away some of the audience's ability to relate.