Well... about Thor #6 I can't say that I was really disappointed by that version of Doom....because I didn't expect much from a storytelling set in the most far future of the Marvel Universe where Galactus is already dead... It's not supposed to happen that way . It's probably an interesting Thor story though. But it's about Thor and I didn't expect it to say much about Victor then. The idea was kinda cool in a way... But as we suspected all wasn't really satisfying.
Nevertheless it allowed Ward to put on paper some truly impressive work, unlike most we've seen I think, so I guess that this issue should be remembered well. (And there's a lot of action in it. And the writing is quite good if you don't care that much about Doom )