Don’t really see the value in this tbh. There already are situations where you know you are almost fucked. (Standing, with your back to the wall, next to the hulk, with a red | head, and no ammo).
It would probably just create a lot of headaches. And dropping a c4 does nothing. (The next turn you die, the game saves and quits, and the bomb only goes off the next time a player enters that part of the map). So you should implement a system that processess all running effects. Etc.