Well it is not easy to match what Perez did when it comes to visual side of the story.
But other than that I feel like you have to be a bit stupid to even try adapting it? I mean, main reasons why Crisis worked is already mentioned artwork and the fact that it had decades of continuity behind it. And well, it obviously changed the game for DC.
Even if in theory, with big budget, you could match what Perez did you can't really replicate other two factors. Maybe, maybe it could have worked if it was final DCAU storyline, but Tomorrowverse? After, what, six storylines? Who cares.
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