Indeed F-B/S have made a strong impact, and good for them! However, H/B are a very strong team, with Kaitlin much stronger and improved since the move to Gadbois. As usual, Jean-Luc is the bomb. He has skating skills to die-for. And I'm done with all the snarky critiques about Jean-Luc's size. We all have to work with what we've got! And boy, does he!
H/B edged F-B/S in the RD for good reason. And H/B actually skated well enough to have been scored higher, with all of the high scores being handed out. It's just the politics that begins to kick in when there are so many good teams to slot into positions. I fear G/P and G/F are gonna be lost in the mix forever at the big games (Worlds & Olympics) despite their talent, because the sport's competitive structure is so outdated. Everyone sighs and shrugs their shoulders and concedes they have to work with the system that's in place. If only they could ferret out the conflicting politics and inherent biases.
I point fingers at RusFed because their maneuvering is and has historically been so patently obvious.
The scoring rise at Worlds has zip to do with S/K's scores at Euros, since they made a mistake in the RD at Euros. The rise is about their season's best 77+ at GPF making such a huge leap to 83.94+ podium territory at Worlds. No one else among the top teams, aside from P/C and Step/Buk has made such a scoring leap this season. G/P got an 80+ season's best in the RD, but it means little for their overall placement with all of the even higher scoring teams ahead of them.
It's as if the judging panel decided to throw out some candy liberally, so as to soften the blow of RusFed teams getting the podium-level goodies (which is also to ensure a third Russian team makes Worlds in the coming seasons).

Not that it won't be cool to see Zahorski/Guerreiro in the mix at Worlds next season. There are simply too many good teams for the way the competitive structure and scoring is set up.