The characters in it aren't just entities that stop existing the moment MC stops looking at them like the LOD system in a video game.

lol. Yeah, sometimes it's fun to see things from a different character's perspective. I remember John Scalzi did it really well with part of the Old Man's War series. One book follows events from the MC's perspective with his adopted daughter showing up at opportune times. Then another is from the daughter's perspective and all the deus ex machina from the first book is explained. The interweave can be nuts.