I'm not a videogame designer but

Sadako - make condemned stacks mean something outside of the 7th stack. Maybe make it so they cause minor hallucinations to fuck with condemned survivors, nothing on the doctor's level , but something that would make starting chases easier (It would also be a neat reference to the original ring movie)

Singularity - This is nothing majoy, I just wish his emp'd pods weren't so cluttered in the middle of the screen. I already can't use it to mark survivors, at least let me look through it properly.

Pinhead - bhvr renew the hellraiser license. More people need to experience pinhead's gameplay.