I' ve always been a fan of the character even back in his pre-retcon days so take this with a grain of salt.
Doctor Strange is awesome. One of the best Marvel movies to date. It's charming, humorous without the humor being out of place, painful where it needs to be and the CGI is perfect for what the movie was doing. I think the cast was wonderful and wonderfully perfect for the roles they were taking on. The casting of Wong bothered me a bit at first but I found myself warming to the character by the second encounter in the library.
Mordo was a surprise on many levels. He was affable, dedicated and the voice of reason I wouldn't have expected going into the movie based on what I knew of the character. I wish his development had been spaced into the next movie but the evolution made sense. Mostly. You'll see what I mean if you check out the movie.
Really good movie. I would recommend it.