I disagree. Kristin has come out of her shell, so to speak, in the past..whatever. I think she's doing great, and I love watching her.
I agree - Kristin in the middays for years was plain and boring. And she had really bad hair (remember that helmet she had circa 2004?).
But for whatever reason, she's having a blast working with Adam on EE, and it is one of the best partnerships on the network. Before they were paired up, I didn't think much of either of them, but they're both learning from each other.
Adam was always a little green in his presentation, but I think he's learned a lot from Kristin (whose forecasts were always good, even if the whole personality wasn't) and she's really learned to lighten up a bit and let her personality shine through. It helps, that they both genuinely seem to like working with each other.
Chemistry really effects the watchability of the Weather Channel. I may be burned at the stake for this, but there is a reason Kristina and Carl were split up on PM Edition. It was almost painful to watch towards the end. They are both rather low key, and it made for a terrible show. You'd get the quick opener, then the music would abruptly stop (what, even when controlled from the basic control room, they can't manage to fade out the music?) and you'd get Carl and Kristina welcoming you to PM Edition with expressionless faces. The day they were split up, their watchability improved 10-fold.
As for the other current "teams" I'd say that Sam & Betty are in serious danger of loosing their timeslot. They are awful. Neither of them has enough experience to put together a solid show without a veteran along side them. In addition, they have zero chemistry. Going to the HD format made it worse, because now they have to interact more often. I'd expect to see either Sharon & Rich or Adam & Kristin promoted to replace them within the next 6 months.
Rich and Sharon, are of course, awesome. Rich is better with her than he was with Jeanetta, and Sharon's better than with her previous regular partners of Mike, Warren, and Dave.
Jeff and Jen in the morning have adapted quite well to each other and put on a good show. The YWT team, is of course, great. Kelly & Bill are also great together, and its obvious why Kelly was reteamed with Bill.
Nick & Vivian haven't quite clicked yet. Nick & Kim WERE awesome... I wouldn't be surpised to see them reunited in some form (maybe as a Day Planner team if Bill goes to YWT to replace Marshall).
Paul, Alexandra and Jim are awful. The problem is Alexandra. She's unwatchable and show is a train wreck because of her. I stopped watching when they replaced Jennifer with her. There are so many better choices in the TWC stable.
And of course, there are the rarely seen but great "classic" teams:
Dave & Warren
Bill & Mark
Mark & Vivian
Dave & Eboni