Eh, I'm down with the look of Atlantis underwater; I'm probably neutered to it "not coming off right" thanks to my love of sci-fi and noisy space explosions.
And honestly, the thing I'm most interested in is Patrick Wilson as Orm. I've always thought he had a more villainous acting style, and his look and manner seem like the perfect counterpoint to Mamoa's Arthur, with more pride, bearing, and an aristocratic air that nicely contrasts with Aquabro, who I love (suck it, Silver Age!) And while Manta maintains his place as the overall arch enemy, Orm's the guy who's been on the rise the last few decades as a bad guy. I mean, some people have tried to compare him to Loki, but I think he seems more like a reverse of Killmonger; someone who has a point and a birthright that could make them heroic, but their wrath so too great. And since Orm is actually the reigning king and fully enculturated Atlantean, he actually seems to have his virtues highlighted even more, since it seems he honors Arthur's right to challenge him in spite of being the villain,