I'm in total agreement with Mike F.'s review. Having seen other Cirque shows already, I was a bit underwhelmed by KA. Yes, the rotating stage was kinda cool, but some of the lulls were quite interminable, and the show felt quite drawn out, in favor of storytelling, at the expense of O- or Mystere-like acrobatics.
The price point is also at a premium to older Cirque shows on the strip, where I feel you can get a more value-conscious, old-school Cirque experience that is more acrobatics-heavy and "cirque"/street performer-inspired.
All this having been said, I saw KA prior to the recent accident, and I don't want to minimize the risks and dangers that performers encounter here on a daily basis. My sympathies go to the performers involved and to those audience members who saw the accident unfold.