Would love a Bonney cover story but it would likely reveal too much. We probably have one more with Pound and Capone.
Hopefully Oda doesn't jump around and we get the conversation between Luffy and Yamato. Knowing him we'll jump away to Law and company arriving.
Oda hasn't done as much jumping around. He used to leave segments incomplete, but it is better in the Wano Kuni arc where there is a distinct conclusion/resolution to a section before he jumps. So I'd be really surprised if this suddenly changes with Yamato.
Bonney would definitely be great since she's been downplayed since being captured by Blackbeard (we don't lose much respect for Luffy getting captured by Kaidou). But yea, seems too closely tied to the main plot.
Maybe Jinbe/Robin since it's been a while since they were in a chapter?
Yup. Since it isn't Yamato, it is a new X-factor.