I really enjoyed it. I liked Capaldi, the slower pace, the new (fan-inspired) opening, and the new cinematography/direction (I think that's new...). It reminded me of how Tennant was introduced, except better. I am hoping the slower pace continues for the whole season. There needs to be more slower moments in order to chew on what's really happening.
I have never really liked Clara, so no change there. Unlike Voltaire, I thought her reactions and role in the story made perfect sense given her established character, even if I don't particularly care for her.
I am so over Vastra, Jenny, and Strax, though. They are just Whovian Sherlock Holmes fan-fiction stand-ins. I wouldn't be surprised if they lived on Baker Street, and I wouldn't be disappointed to never see them again. My biggest hope for the new Who was there would be a cleaner break from the past, much like the Eleventh Hour did. You have to clean out the old to make room for the new. There was some, but I am a little worried that without a clearer break the series will continue to devolve into the convoluted nonsense that permeated the end of the RTD era.