Its the Doctor and the new companion climbin' up a ladder....how does that set up expectations that can't be matched in the episode?
Rather, they're dangling from a ladder that's hanging from the TARDIS as it flies/hovers hundreds of meters above London. That certainly sets up some expectations.
Judging from the image of the Snowmen, this looks like it might be that long-awaited Doctor Who/Calvin and Hobbes
crossover! The Deranged Mutant Killer Monster Snow Goons live!