Lol, I’ve done this exact thought experiment. Heck I practically brainstormed a version of Eternals in my head once, but instead of being Gods posing as humans, they were mortal Reincarnated Individuals who knew everyone/everything was reincarnated, but what gave them advantages in this world was that they remembered their past lives, and could use that accumulated knowledge for good and for ill.

Its a cool little concept that somebody will turn into a TV series/Movie/Video Game at some point I’m sure.