Hi. I've already told my suggestion on pixiv and I'd like to duplicate it here.
1. The ability to hold your victim until the kill. It'd be great if unarmed character could keep his victims (in chokehold, for example) as long as player wants to. And after some time the player can hold the button to commit a kil;
2. Adding more suffocation technics. If it possible, it'd be awesome to see more strangling, garrotting, hanging and drowning elemets in the game;
3. Victim models improvement. Schoolgirls' shoes are broken after killing them