I've gone "Knock, Knock, Knock, Knock, Dead" too many times to ever call this event enjoyable. I give it a 4/10. Eliminate the knock and NttG Spam, improve rewards/lower prices, make the auras BtAoP, and make it more solo-friendly, and I'll up the score
My Behemoth, D.A.R.Y.L. has been around to every last "suspicious crate" 5 times, and not a single zombie. I'm right up next to them, using both "Clobber" and "Defensive Combo" to break the crates open, but not a single zombie. Another theory shot down.