Killer Klowns was one of my favorite scare zones ever, sure hope it returns. I used to enjoy the zones as much, if not more than, the houses back in the day. But with the event being so jammed packed and younger, my group of middle aged men doesn't really get any scares in the Zones any more so I have no problem with it just being a fun zone like the first one.
My pipedream would be fore them to move the zone into NY. Fill a lot of the area with parade floats and stacks of mummified people/cotton candy props. Just have the clowns and main characters roaming around. Would be awesome if they could do a costume that had a Klown with and Officer Mooney puppet, or something like this where the person's legs and torso are the clown (with a dummy clown upper body and head) and the person being Mooney.
Man Cut in Half Costume
Use projection mapping (I ask for this every year since Acid Assault) to color all the buildings like the bigtop tent. Every 30 or 45min when it's time for a cast change, have Klownzilla projected onto a building and the clowns leave like they're scared and a tiny minishow with the regular human characters being scared and then the cop runs over behind the icecream truck and Klownzilla bends down to "pick him up" and then the generic cop character is on the building projection and can stab Klownzilla in the nose with his badge. Klownzilla drops him and the scareactor re-emerges from behind the ice cream truck. Klownzilla spins around and explodes. And the humans leave and then the whole new cast comes out to start another shift.