There are so many things connecting this, remember Drake saying "I saw in the reports... think you're a Vinsmoke", and Drake is probably having some role on this CP-0 thing, since he is the Captain of Sword.
But the callbacks built with Sanji/Robin from W7/EL and Wano are really interesting to see.
Luffy isn't doing anything when Kaido goes down, only if Oda wants to make Kaido look like trash. Zoro has a time limit due to the Elixir, Sanji is probably the only one who has the potential to be completely unstoppable and lead the crew against CP-0, and consequently having a major role on protecting Robin from being captured.
Giving a lot of trouble to the WG could simply mean protecting someone dangerous like Nico Robin in a situation where everyone shouldn't be able to do, which is: fighting and defeating an Younko and his whole crew, then fighting the strongest CP