I can't say whether or not making an Eternals movie was a good or bad idea, I know absolutely nothing about them, but are these thoughts forming now just because it seems like the movie appears to have failed? I'm sure there must've been some way to get a functioning movie out of them, like they have for some other characters. The problem I can tell from the outset though is something like Guardians of the Galaxy is a lot easier for a newbie like me to pinpoint who they are wia their distinct looks, while the Eternals look astoundingly dull and same-y with their costumes. Is there something about this property that doesn't work for film, or did they just not get it right here?