Can't believe this was left out of the early summary. Things are gonna ramp up even more now that Onigashima is dangerously approaching the Capital. And most of the allies still don't know.
The Hyogoro bits seem like a setup for Chopper to swoop in. Not falling for the death flags, Oda. Though if there was someone notable likely to die, it would be Hyogoro.
Marco is doing his thing. Expect nothing less from the right hand of the Strongest Man.
The storage room, where the Scabbards are located, being close to the Skull entrance suggest the person with them had just arrived to Onigashima right before its ascent and stayed by their side, or made little movements upon entering. If it's the latter, then they could be an extra liability for whoever arrives to save them from Jack, lending credence to it being Hiyori.
Sanji's gonna pull some Mr. Prince stuff to solve his choice dilemma, I bet. I don't see how he would prioritize one destination over the other. Both the Scabbards and Momo are in danger with enemy forces concentrating their man power on them. But, if Sanji chooses Momo, then he would be the 3rd Straw Hat Yamato interacts with. If Yamato does join, then I don't see why they can't get to know each member at a time.