10
the safe take for Eternals is basically just doing WildC.A.T.S, and have the kherubim Eternals crash land on Earth thousands of years ago and already be super powered, and be fighting daemonites deviants throughout the course of human history and being written into various mythologies before some shit happened that mind wiped them before endgame restored their memories somehow.
You get to have your big historical event scenes a la Wonder Womans no mans land fight, and then you get your modern scene with someone getting like, paintings of Samson, Gilgamesh, Hercules, St George killing the dragon etc and then contemporary sidekick going all "WOW THESE ARE ALL THE SAME PERSON... AND ITS YOU!".
But they're still kind of their own little bubble, and its not like the MCU does as much time travel shenanigans as DC does, so I'm not sure what it brings to the table in terms of fleshing stuff out, because I really don't think Disney are going to be pushing the 'human race were created and genetically engineered by aliens all along' angle.
I guess you can show Rama Tut in ancient egypt times before recycling him into Kang for ant man 3?