I didn't finish school as a writer and director, but took movie history, basics of storytelling, and graduated as a 3d artist for enertaiment buisnes(originaly started as 2d animator). And from my little knoweladge of movie making, I am not 100% sure that this movie will fail(as you saying). Shane Black is a good writer and director and I believe a very good artist. He is always using crazy ideas for his movies and usually it worked out well.
Also first Predator movie was a fluke, Thanks to a lot of people this movie became a classic (Stan Winston, Brothers Thomas, Joel Silverm, Arnold, Silvestry, other actors etc), but I personally think that main reason for Predator suscess was John McTiernan, He is just a very talanted director for action thrillers. And here we see a kind of cartoony comic story about big musculars soldiers fighting an aline hunter, becoming movie classic for 30 + years already.
So yes, i believe any crazy and not serious ideas can become classic, if the developers will get lucky with producers, actors etc. and DIRECTOR.
Also my last favourite movie about Predator, was Predator 2 and I didn't liek any other movies with Predator (I an tollerate Predators )
So I am hopefull for this movie, but I wouldn't prase it if it will end up being a fail. But while they making Predators movies, we always going to have a chance to have a good movie again.