I don't think every plot line/character needs to be wrapped up. They can't make every episode 2 hours long, and god knows how many scenes were cut. The KC union son and Ruth, both lower in the chain of command, go from personal enemies to organizational allies who are making big decisions. That's good enough for me.Dead ends:
-The car crash. It just happens. It doesn't effect anything. No one is hurt, it wasn't caused by the cartel, it has no link to anything else going on in the show. It's just a device to create a dramatic hook at the start of the 4th season.
-Wendy's dad and his congregation and the baptism of Sam (whatever the real estate agent is). What is the point of this? They all just disappear and have no connection to the greater story or end of the series. I don't think it's very realistic to think that the whole congregation would just follow him out there.
-Cosgrove and the KC mob. They just kind of disappeared without much conclusion or wrap up.
-The cartel priest. Why?
Plot holes/wildly unbelievable ****:
-Ruth is burying Nelson's body in the bottom of the pool while the contractors show up to start working for the day. Did they just not notice her walking out of there with a shovel?
-Javi, this big cartel hotshot is just wandering Chicago without protection? He goes to a fancy restaurant for lunch, beats the **** out of a guy in the bathroom and no one notices? Javi's character in and of itself is unrealistic. Cartels are much smarter. They don't just wander around the Midwest killing sheriffs for the hell of it.
-The way the Snells just hair-trigger murdered absolutely everyone that looked at them funny and just buried them in their massive opium poppy field.
This is just off the top of my head. I'm not trying to ruin the show, just explain why I didn't love it as much as Breaking Bad.
I don't remember everything, but the cartel priest was there as a mirror for Marty and Wendy. He annoyed me several times, but there were definitely a few scenes that were written well.
The whole point of Javi was that he was a loose cannon. We know that from the first time he's introduced. Cartels don't act as impulsively as Javi, but Javi does. It's what kept his uncle from trusting him, and it's what got him killed.