Karen has gone up considerably in my estimation - she's done a great job with teaching Mark so far and her choreography has been generally fine. And she certainly doesn't annoy me as much as her fiancé does, though I thought Kevin was a bit irritating last year anyway.
I also like Janette and Alijaz much more than I did last year (I didn't dislike Alijaz last year, but I like the more relaxed Alijaz from this year a lot more, and he did an admirable job with Alison). I love Janette's behind the scenes videos each week
I've never been Kristina's biggest fan (dance-wise, not personality - she's lovely in person) but she's starting to win me over this year. I still dislike a lot of her choreography, but she's clearly teaching Simon well.
On the other hand, Brendan's gone down in my estimation - clearly he's frustrated, but he's letting it show too much to the detriment of his and Sunetra's partnership. He just looks bored a lot of the time now. Similarly I'm getting a bit bored of Ola's choreography, and her heart doesn't seem in it this year either. Pasha's become a bit anonymous for me this series - I don't notice his choreography being particularly bad or good, it's just a bit nondescript, and I feel the same way about his and Caroline's partnership, though she is good.
As far as the new pros go, I like Tristan (love his attitude!), think Joanne's a bit irritating but quite funny and am not sold on Trent - I don't think his routines are as amazing as many people think, and I have a feeling he may struggle with a non-contender - he lucked out getting Pixie, who could probably dance anything and make it look at least half-decent.
And my opinion isn't really changed on the other returning pros - I still love Natalie and think she's by far the best of all the pros, still like Aliona (and always have), still find Anton annoying and still don't get the Iveta hype at all!