I think this season has been great. JDM as Negan is fantastic.
I can't think of a more despicable, charismatic villain, in any medium. He and King E. have been incredible additions to the show. Andy Lincoln has also done a great job as a broken Rick. Carl is finally coming into his own to be more like comic book Carl.
I look forward to seeing Eugene becoming the MVP pretty soon.
To those complaining about a lack of zombie threat - that seems pretty natural. They have a safe environment, and the much, much bigger threat is other people. It's been that way for a while, be it at the prison against the Gov, or getting captured at Terminus. Since they're not typically out in the woods at risk of getting swarmed by zombies at any time, or scavenging alone or close to it, zombies are only a threat in herds, or when used as weapons by other people.