I hope:
Luffy VS DoFlamingo
Luffy VS Akainu
Luffy VS Blackbeard
Zoro VS Mihawk
Zoro VS ShiryuThe big 5 battles I expect to be graphic and that will end with death
These are just the battles that I am 100% sure will happen, though, who knows if there will be more battles that we didn't even think of yet
iam with you on that..
i would also add Zoro vs Kuma,thought.