Luffy Sabo and Koby representing the future of each group
As for what they’ll do in elbaf imo both Sabo and Koby will end up helping luffy. Sabo against shanks’s brother and Koby against Kuzan
The holy knights are obviously already in elbaf with them being the revs main enemy. Sabo luffy’s brother going up against shanks’s brother also just makes sense. Also gunko just looks similar to koala
Kuzan while not being in elbaf now I think he has high chances of showing up. He not only has ties to lots of people that are already in elbaf and that might end up arriving
- Saul obviously
- Robin obviously
- Luffy through him being the one to take down Garp + can give him information on Blackbeards plan
- Koby and sword might also do up since Koby is going for Luffy
- The big mom pirates might show up and he played a big role in invading tottoland and stealing pudding
Luffy is probably going to clash with both but he probably won’t take them down. Maybe kid can help against stabs because it ties to shanks and law can help against Kuzan because it ties to Blackbeard
The 3 main villains of elbaf being Linlin stabs and Kuzan could be cool imo
Maybe like how Sabo and Koby are the future of their respective groups can potentially end up working together for the better maybe dragon and Sakazuki can do the same
Them going up against the gorosei
Dragon fighting Garling the father of shanks, previous leader of the god knights, and likely strongest of the group
Sakazuki going up against topman the godhead of justice and previously the strongest of the gorosei
In general the admirals fighting the gorosei could be a really cool set up. Dragon probably being an ex admiral and his spot going to Kuzan imo. Still want kizaru to step down so we get his orange replacement
Also I can see both big mom and Blackbeard temporarily taking over elbaf and the world before being taken down by luffy