I'd have liked the Rossiu arc if it were in a different anime. It was too much of a change in pace from the remainder of GL. For all the hate Rossiu accumulated, he was a good character.
40% tried too hard to make Simon hot-blooded, and that trait was never really in his character to begin with. He was good at delivering when it counted, and short spurts of super action, but a total character change like that just wasn't believable.
The fact that he was fighting to get his glorified realdoll back was all the less satisfying, particularly after she pixelated away.