I liked it, actually. My boyfriend had to twist my arm about it when it was airing since I was already losing interest in Matt Smiths run who has been my least favourite of all the revived series Doctors. Yeah, yeah, I know a lot of people love him. The only thing that made me enjoy his run truly was Amy, and when she left for Clara I wasn't really feeling it. Clara felt like a cardboard cutout most of the time, just there, despite this apparently amazing role in the Doctors life as The Impossible Girl.
Clara felt a bit redeemed for me in this episode. Yeah she was kinda a bit of an idiot when the Doctor regenerated (hasn't she seen EVERY Doctor regeneration??? Why did this phase her?) but the sort of tension she had with Capaldi was great, as Vastra said it was nice to see her get her feathers ruffled for once. I really miss Amy's fieryness. The villain was a bit neither here nor there for me, just a vehicle to get the ball rolling.