I didn't care for this season. Not anything too surprising other than buck tooth girl dying. I heard last week that Uncle Rico/Greg had signed a contract for season 4 so I knew it wasn't him and I'm not so sure he isn't the personification of evil or death for the series. Bad things happen to those who allow him in their lives. I think everyone except Walton Goggins knew who his Dad was so that wasn't a surprise.
To me, the show is about choices and karma. Buck tooth made a poor choice in who she chose to love. The Ratliff family, death would be the easy way out. Karma demands they suffer poverty and humiliation for their pride and lack of empathy for others. Belinda takes an even bigger payoff from Greg and then abandons new boyfriend/business partner the same way Tanya did her so there's going to be a penalty for her in the future.
The others, who knows?
The first two seasons start slow but then really hit a groove with the character development that you were kinda like, "Wow! What did I watch?" And you would think about it the next couple of days and the more outrageous scenes felt like they worked in the show. This season was just blah on a lot of the characters and the stuff like the incest angle, even Sam Rockwells monologue (while it was funny) was just more like we're just going to shock people rather than give any depth to the characters.