X-com soldiers can fall conscious and die due to fatal wounds. (So can enemies if you enable the option).
Currently, the only way to know if they are bleeding is by standing over them trying to use a medikit.
Wouldn't it be nice to check them even if you didn't have a medikit and know whether or not they needed aid?
How about putting a simple "Bleeding" icon that could be represented by a red tear drop overlaid on the Corpse Big Object. That way you could use the inventory screen when standing over a fallen unit and tell not only if they are dead or unconcious, but also if they are fatally wounded.
Forgive me if this has already been brought up and discussed/dismissed. I didn't find it when I searched suggestions.