I'm very interested to see Tessa and Scott's Carmen mostly because the discussion above about refinement, control, and "skating to the edge of the precipice" (I love that SusanM!).
We know that Tessa and Scott will keep their refinement and control but if they can bring that feeling of passion, power, and "it" (that's for you mia_joy) then it could be truly spectacular!
However, we've also seen Meryl and Charlie improve immensely in their refinement and each season their unison and connection with each other improves. I still think that either team could win on any day and that (like last year) much of the deciding factor will be who can get their levels. I would have said who has the best skate on the day but as we saw at Worlds that part may not even matter as much if the levels aren't there.