Worstgen
Kejon
I think Sanji is going to fight Queen. It makes the most sense to me and it would be a fun fight to watch. Sanji however needs to get stronger and even though he got his RS now, I feel like that will not be enough to put down Queen for good. After Wano he should get a big bounty increase possibly getting to 1B but I'm not sure.
Cinera
Why Queen? There doesn't seem to be any build up regarding that. Also, what about the other SH allies in this arc? Who would they fight?
Kejon
Well, someone has to take out King and Queen this arc and since Luffy is going to fight against Kaido ( with help of course ) I think that Zoro taking on King and Sanji on Queen is a possibility and a good thing if that actually happens. Maybe they can get some help too. As for the rest of the SH's and their allies they should all get a good fight. The 9 red scabbards could fight against Orochi if he is that strong.