Would a NPC Camera work?

So I have been thinking about how to make a NPC “camera” system and I have a better solution, but I’m just kinda curious; could I just make 1 camera per NPC and position the camera so that its where the camera would be on a normal players character.

Like you could use the functions of the camera as normal, or am I forgetting something? Like are cameras perfoment heavy?

I’m not gonna do it this way, it’s just a question.