Re: No Name? Really?
The problem was, while the originals were born out of a writer's trepidation over the technology of the modern age - specifically plastic surgery - dehumanising us, the new Cybermen come out of an age where that has already happened, playing on modern themes of technology organising our lives - e.g., that bit in Age of Steel where everyone stops for the daily download. While the originals were chilling because they were what we could become, the new ones are merely an overblown extrapolation of what many of us already have become.
Additionally, while the new ones are mostly victims having been converted and stripped of their will, the number 1 reason why the originals were so terrifying was that, culturally, they had chosen it - it was something they'd agreed to as individuals in order to stay alive; where the new ones could have avoided their fate, had Cybus been stopped in time, the old ones were inevitable as long as the Human/Mondasian instinct for survival remained. To that degree, they also became a grim portrait of human failings; in their first appearance, Polly asks the Cybermen if they care that people are going to die. One replies: "People are dying all over your world, yet you do not care about them."
Basically, the NuCybes are like the Borg - as frightening as they may be, their status as victims makes them more sympathetic - while the OldCybes are like Darth Vader - they willingly brought about the horror of their situation on themselves, and thus they can be classed in the chilling state of mind of someone who would.