I love this series, and all books Elle. So there's that. But, like others have said in this thread, this one isn't my favorite (it must be so hard to write a bestselling series and meet insanely-high reader expectations!). It's well written, as usual, and ambitious, which is more rare, but it doesn't quite pull it off, IMHO. 
 No, I don't mind Sabrina being "cold," etc. She was harder to like than the other heroines and she doesn't get many happy moments, but I think it's more the big gap between her personality and Tucker's that readers are having a hard time with. She's SO driven and shut down when he's SO open and generous that it's hard to imagine them together unless the focus is on how they complete or help each other (which happens in the first two books but doesn't really happen in this one). Yes, Tucker is the perfect boyfriend so Sabrina doesn't seem to deserve him but the plot also doesn't allow Sabrina to do anything for him so the relationship seems to stay one-sided. I think, plot-wise, she needed to help him in some way with some problem of his own (as he does in helping her loosen up and meet her goals) and then it would be easier to accept them as a couple. 
 I liked the fact that Kennedy tried out simultaneous plotting, where The Goal overlaps with parts of The Score. I think that's cool but then we need to see some new POV in those scenes and not just repeat stuff (honestly I've struggled with that in my own books and don't know that I've solved it yet). Also new scenes with old characters should show some sort of progress, I think. I found those joking around scenes with Logan and Garrett just silly, though I know lots of readers seemed to love them. And Grace and Hannah don't add anything to their scenes. I wanted to see them still maturing and learning, which happens with Dean's scene with Sabrina but not really in the others. 
 Short version: I appreciate all Elle's skills, as always, and love the series so it's definitely worth reading, especially since she's really stretching the series here, but it's not completely successful.