Just a thought i had today while hunting some glyphs.
March of The Tortodrones adds mysterious rooms to Infernal Passages and scenario rooms to Devilish Drudgery levels, Caketastrophe adds Creep Cake nests to Clockwork Tunnels, Dark Harvest Festival adds Punkin King arenas to Clockwork Tunnels, so why not put Black Kat nests in Haunted Passages and Candlestick Keep levels? Kataclysmic Confrontation isn't a fun event at all. We have no control over our grinding and the only thing we have to do is to keep speedrunning Candlestick Keep missions while hoping for a black kat to spawn. The event is exhaustive, but i don't need to go to the arcade and have to deal with a couple of compounds and wolver dens before getting to the black kats when i can just open the missions tab and keep speedrunning Alone in The Dark. So put Black Kat nests in Candlestick Keep levels and Haunted Passages in the arcade, and fill the gates with undead levels so we have a reason to go to the arcade during the event and make it seem less exhaustive. Black Kats found in arcade nests will drop ancient page tokens and the book of dark rituals.
P.S.: Increasing Black Kat spawn rates and removing wicked whiskers from non-Black Kat raiments would also be good to "fix" the event.
Wicked whiskers exist as a paywall, where it so happens a lot of people convert irl money to energy just to buy spots at margrel. Same reason radiant drop rates were reduced in october of 2013.