Imagine if the enemies could get second winds or get brought back up by their buddies. Or even the archvile effect from doom2 (these creatures would walk up to fully dead units and bring them back up).
I think I’d like to at least see the capability for them to get brought back up when they are downed. Maybe most of them wouldn’t shoot from the ground while they are down. But some certainly could. And they could have a countdown timer to when they fully bleed out, just like us. And you could speed up their timer by shooting them.
It might mess with kill timing for the players. When does the enemy count as killed for the players second winds and kill skills? So maybe it needs to be only special units that could get back up.