Agree with most of what you say. Im also a huge fan of hers and Im slowly waiting for everything to come together.
That serve was pathetic today, and I know how much better it really is than that. I dont know what she's done to it, but she has to work on that, and that should be number one priority definately.
I dont think she is overweight (TV makes her look worse), and as you said she definately has trimmed down in the past year which has helped her a little bit, but I agree in that improvements can still be made in that area. I wouldnt call it overweight though, she is 'almost but not quite' there.