Holy Shit. I just had an epiphany.
So an adrimal fight is pretty much confirmed in this arc. Needless to say, Awesome; but whatever, Luffy & Co beat him.
But Y'know who we haven't seen in a long while?
You can bet your ass he's going to show up massively badass in this arc. Considering how He took a different route through the grand line, this is the next possible place they could meet.
Also if you notice He's been rising in rank. Future Admiral material, anyone?