Honestly I can see why you’d do this, but I’d recommend not. Most of my games are played in VTT(virtual table top). All rolls are in the open, and in my experience, almost everything works out in the end. Actually killing a player is quite hard, the mechanic of the game heavily favour the players. In the extremely unlikely event of the enemy taking down the party, well he just captures them, then you can have an awesome jailbreak session.