This Christmas special makes for only the second Doctor Who episode I've ever watched, with the first being 2010's Christmas special. I was a little lost during the 2010 special with the jumping between the two on the crashing ship, constant distractions and 'oh why not' random flying sharks. This year's seemed cool with the snowman thing and in general sounded as though it would be a decent standalone episode since I saw frequent mention it wouldn't have him with a companion.
So... I'm glad it's apparently not just me not being a fan for the reason this was very disappointing. JT, you put it so succinctly - all I kept asking was "WHY?" And I tried to just chalk it up to my not being familiar with Who past very basic details, but it got to a point where it felt very much a problem of not just being oblivious to Who's long history but from an actual production standpoint. I was expecting a much richer, and involved, and clever story from the way people praise Doctor Who.
But, the snowmen were a terrible disappointment and the ice lady just left me scratching my head. The snow was an alien parasite or whatever, and they weren't supposed to get their grubby... flakes... on the ice lady, but the ice lady was scattered in pieces around the courtyard for a good length of time? With the snowmen? "The Intelligence" never came off as any worthwhile threat, although the ice lady was very neat at first - until she was foiled by a window sill. I kept expecting her to T-1000 after the big fall so it was surprising that they stayed away from doing that. Although, it pretty much implies that the biggest threat of the episode could have been dealt with had they just pushed her down the stairs. Or off the roof.
Lizard lady & wife were interesting, until lizard lady finally pulls her cool sword out to jump into action and was promptly knocked out of the fight. Very disappointing.
There was an aspect I enjoyed through the episode, buuut apparently I was very much mistaken. Turns out it's Ian McKellen who voiced "The Intelligence," but during the episode I thought it was Patrick Stewart. I swear it sounded like Stewart. So I got a kick out of it when the Doctor described the snow as a "
crystalline organism."