Maybe he won't be working on the show after all, or its development is still too early as you suggest. We'll see, and since we're here, talking about the show again, I must say I trust in Noah perspective as I've enjoyed Legion & Fargo. But when it comes to political narrative in a near-future setting, this could benefit from referencing pieces of science fiction like The Expanse, which is remarkable good and so grounded. But yeah, concept art is one of the most interesting parts of worldbuilding, and I love creature art, so here I am waiting for them to hire talented artists.