The scarezones last year were better than the previous year without a doubt.
They did have some issues though:
The survivors being turned and zombies overwhelming the streets as the event went on wasn't incredibly apparent, it likely looked spectacular on paper but the execution would be difficult at best.
Some of the better scarezones turned into photo ops. The barn, walker eating the deer, crawling torso, and even the barn became nothing more than a train of people posing and taking pictures.
I'm all for people taking pictures but when they have to move scenery and lose effects because the rubbernecking gets so bad, something needs to change. Be it the mindset of the visitors or the policies of HHN.