It made no sense, really. You have a factory in a town and year where air pollution was downright terrible, so really all Mrs. Gillyflower needed to do is pump the vapours out of the chimney stacks and cause it to rain. Instead, she builds a rocket (how?) and fires it into the air. HUH?!
It looked wonderful, probably because I was still coming off the BioShock Infinite kick, but goddamn, there was some daft Bond villiany going on at the end and the plan was badly told (preserve "perfect" people, but poison the rest, then...er...unfreeze perfect people and explain what happened...I guess).
Very much style over substance. I was hoping The Doctor was going to be stuck like that for a while, but no, two scenes in and he waves his magic wand and ta-da! Same goes for Clara. Speaking of which, why the hell would she give into two snotty kids' demands? "We're going to tell dad you're a time traveller!" Who the hell is going to believe them when Photoshop exists?!