Oda should've atleast had Bogard assist Garp like the new age Marines did. Him appearing here is nice but just makes it seem like his only purpose is existing around Garp sometimes. I suppose Oda never really pretended he was that important but still.
The appearances from all these strong fighters sounds great, shame we won't see everything go down. Roger, his two strongest crew-members, Garp, his most notable (and only) subordinate against Rocks and his legendary and stacked crew.
First Kong appearance in over a decade if I'm not mistaken. Hopefully we see him in the modern day as well.
The Kuma stuff sounds nice too. Hopefully we get some more meaningful stuff from his story as we see the transition from King to revolutionary to (undercover) Warlord and finally nearly full machine.