I stand by my comparison with Hyouka. After all, I don't think the writing in itself in Hyouka is particularly amazing - I've actually read some of the Hyouka novels, and they're pretty middle-of-the-road - but the execution of the series as a whole by the staff at Kyoto Animation is what makes Hyouka the anime a masterpiece. Kiznaiver is a less "realistic" show, but I don't think it loses when it comes to carefully considered characterization.
I'm sorry if you have different standards for what constitutes good characters, but all I can do is report on what I find to be effective characterization. As soon as the first episode of Kuromukuro, with the addition paid to visually characterizing the various character with quirks of movement, and the second episode of Kiznaiver, which paid deliberate attention to breaking down the stereotypes we would have assumed from the first episode, I was sold on each show.