As a Jinbe supporter all these years, it's so gratifying to see him as a cohesive part of the gang like this. Beautiful stuff…
Now, obviously I would have been even more excited if Carrot was in that line-up as well. But not being right there right then isn't a deal-breaker in any way. The fact that she's been with them all the way up to that scene, with no visible exit like Yamato, makes her absence just as conspicuous as her presence would have been.
Carrot could have gone with the other Minks, but she didn't. She could have gone to protect Momo and start becoming one of his new vassals, but she didn't. She's with the Straw Hats, has been constantly all through Onigashima, and she hasn't evaporated just because she wasn't in that last panel.
Here's what I do know: as a character, she would definitely be willing and able to stand alongside them, ready to fight. The fact that she's not just begs the question, what's she up to? She's been there with everyone all this time just for decoration? As a favor to editor Naito? I don't think so.
And of course, Sulong remains a factor. When will she use it, and what for? And will Luffy actually see her do it this time? He never saw Pekoms transform, not even in the anime, and there are no other Minks around. This will be his first time seeing Sulong in action, and it's her chance to show Luffy and the others what she can really do. I really like access timeco's idea of Carrot getting Luffy up to the roof, I can definitely see her skills in and out of Sulong being useful in that regard.
We're at a crossroads, no doubt about it. Either Carrot is going to do something important in this war, or she won't. She'll either earn her spot on the crew, especially in Luffy's eyes, or she won't. But depending on what she does from here on out, her current last-minute absence won't matter in the long run.