I'm really enjoying Kings. I wouldn't call it the best thing ever. I will again Echo Ian McShane as the stand out actor.
I can definitely see how this is like a Shakespeare "re-imagining." And like many of those, it rests squarely on the director and actors shoulders to sell this as a legitimate reality. I'm hoping that we'll see less Goliath tanks and things like that from now on. Given that this was going to be a network TV audience, I'm hoping they just wanted to beat people over the head with this being the story of King David, and now that that's established they'll just tell the story without quite so much "look at this, aren't we clever the way we renamed this!" moments. Unlike Romeo + Juliet, they aren't tied down to a specific script, just plot points, so hopefully they won't have to give everything weird names. (If David ends up having an affair with a woman named Beth Sheba, I'm out.)