My guess is that not all the top teams will get or stay out, but that we will have a higher turnover ratio than we've had for quite a while.
Turkkila & Versluis are expected to stay in, I think. Feel like I asked this question before.
Wang & Liu, as well, maybe?
I like the younger Finns also.
Think it is not impossible that D'Alessandro & Waddell could leave juniors with some hardware--they are staying in another season--and try to grab a spot on the Canadian podium if F-B&S get out by the next Olympics. Not easy, but not impossible.
There are also at least a handful of very talented athletes from powerhouse countries, without well-established partners, hovering around the fringes of the sport right now. Some of them could be quite competitive if they or their coaches recruit someone at their level and/or build up a current partnership.
My current feeling on the U.S. dance scene is that everything below, aka younger than, Carreira & Ponomarenko is likely to be a dogfight, just as the last four years have been with everything below Hawayek & Baker. Also keeping my eyes open to the possibility of Nguyen, McNamara, or Kolesnik rocking the boat if they show up with someone at their level. I expect Shpilband to try to make a big push next season so C&P and Green & Parsons had best show up ready.