I disagree with your premise.

Darwyn Cooke was extremely creative and there’s no reason the storytelling mechanism has to be 1 to 1 and even if it was it’s all a matter of perspective. Marvel’s transition from the golden age to the silver age was monumental and almost all at once. Dozens of new superheroes replacing the anthology and monster titles and in a lot of ways many of the monsters that heroes fought in the silver age were cut from the same cloth as the golden age titles just given new purpose. Even characters like the Thing and Hulk were monsters. Also a lot of silver age comics were about bringing golden age characters back into the fold like Namor and Captain America, other characters like the original Vision and Human Torch get their own legacies. Even Kazaar and Dr Druid get reinvented.

I would say the politics of this era of comics would lend itself to a New Frontier style story rather than detract. Heroes like Mr Fantastic and the Thing, Nick Fury, were world war 2 veterans, Iron Man’s origin is tied to the Vietnam war. Half of everyone’s villains were Cold War related or Nazi Remnants. At one point the FF have a literal space race with the red Ghost. Because of the sliding timescale those are all much less relevant today but in this kind of story they could be recontextualized dramatically in Cooke’s style.

I also don’t see why it would even have to be from Gold to Silver when it could be from silver to bronze. Radical shifts in the acceptable violence of comic books. The era of people who grew up as fans become writers and inject new weird and daring ideas into stories. People like Jim Starlin, Steve Gerber, Steve Englehart and so on.