If it’s a type of enemy you see just one of at a time but see it often, sure. If there’s many, cost of copy/delete is definitely not that high relatively speaking.
(random sidenote: in the first Mirror’s Edge game, you can sometimes hear enemies you passed scream as they fall when you pass from one part of a map to another, as the ground in the map is unloaded before the enemies unload)
If it’s a type of enemy you see just one of at a time but see it often, sure. If there’s many, cost of copy/delete is definitely not that high relatively speaking.
(random sidenote: in the first Mirror’s Edge game, you can sometimes hear enemies you passed scream as they fall when you pass from one part of a map to another, as the ground in the map is unloaded before the enemies unload)