It also makes me a sad panda that the writers didn't even bother looking into Isaac's past in the last episode, which leads me to believe that he will die a horrible and painful death one of these days. Maybe Sylar will get to him, after all? (Just as Hiro had seen in the future?)
Even Ando's getting more screen time than Isaac. But the guy playing Ando still isn't listed as a main actor, and that leads to me believe that he, too, will die a horrible and painful death soon.