What's the alternatives? Kaiba, Macross, or Geass.
1.Geass is shit.
2.Macross's plot is at the same place where Kurenai's plot is. Both of them lack direction. In the case of Kurenai we have the moe Murasaki to get us by. But in the case of Macross we get a cheesy "I want to become an Idol" plot. Ranka's said plot is like watching one of those gay movies that Britney Spears would Star in.
3.Kaiba seems to be random bullshit. Kaiba's the Kindom Hearts 2 of animu. I wouldn't be surprised if Kaiba waits all the way to their final episode to explain the main character's plot. Then once they explain the plot it'll be ambiguous. Which will result in annoying fanboys (such as yourself) to start saying how "deep it was."