New Killer idea and huntress/trapper suggestion.
Slight spoiler, but you know how the trapper deals with the miner at the end of the blood bones and grit bonus? Make that a mori for him.
For huntress she should be able to throw a survivor she's carrying. If it connects it's an instant down. Just yeet Feng Min into the sunset. (Yes it sounds silly but you'd give up a hook for a potential instant down. So...why not?)
Killer idea: The Ticker.
As the killer your screen is entirely black, and every time you move your screen lights up with a grayscale version of the environment with a very limited view in front of you. Every time a survivor or generator begins making noise, that area becomes illuminated. If a survivor stops in their tracks, you lose track of the survivor (maybe a faint aura from their breathing)
From the survivor's point of view the ticker is a giant spider or centipede monster climbing on walls and ceilings etc in an erratic pattern. Vaults and pallet drops light up the area in normal color for 3 seconds.
I think that would be an interesting nightmare to face. If the monster lunges and hits a survivor the area lights up too and the blood makes a small amount of noise. When you need to hook someone every time the survivor wiggles the area lights up and makes it easier to find a hook. (gen and hook auras are still visible like normal)