True. Sometimes it can work out. Many times it's simply that it took place so long ago, publication wise, and writers don't think readers will be interested. Or maybe they hadn't even read the story themselves and aren't aware of it. For example, you do see few mentions of Unthinkable these days. One of the few times was when we saw Valeria down in Hell in Doctor Doom #3 and I liked the way Cantwell handled it. I hope that gets revisited one day. She does not deserve to be trapped there since she was deceived and an unwitting victim of a deal Doom made with the Haazareth demons, who were really agents of Mephisto. I thought that was a big flaw in Mark Waid's story anyway. How could Doom not know that Mephisto was behind it all and it was really Doom that was being set up. We see Mephisto using her as a bargaining chip
I keep wondering if Cantwell would go back to this at some point. It would make a great second arc. But I am beginning to wonder if he will be leaving the series when his Iron Man gets underway