because we see Sanji vs Black Maria and of course Robin will sub-in.
the same thing should (at least) happen to Jinbe, with Brook sub-in.
So Sanji vs King/Queen, and Jinbe vs Jack.
The problem is Sanji and Queen have an established connection, plus his chivalry. This has already caused us to guess that someone will take over that fight for him.
The difference with Jinbe is that he has an established connection to WsW and started to fight him. Not saying Brook can't take over that fight, its a matter of if he even is. Its very possible Oda wants Brook/Robin to team up against Black Maria too.
Not only that, I really don't rank Jinbe any lower than Sanji at this point. I could very well see Jinbe fight King while Sanji fights Queen or vice versa. Jack being MIA has me thinking Yamato may have a problem on her hands soon, but its possible Jack is still in the mansion near Jinbe.
These are definitely the big lingering questions with these matchups. Really it only seems like Ulti and Sasaki's fights are solidified with WsW being 80% confirmed with Jinbe unless things miraculously change with Brook