It really is not evem about running agendas. There are very obvious implications for ZKK. Oda's definitely having his fun with it.
Zoro has said many things and didn't do it in this arc
"I'll avenge yasu" didn't fight Orochi at all and didn't avenge Yasu
"I'll round up samurai " didn't even recruit one samurai when the whole crew recruited
Yet you think him saying "I come to cut kaido in pieces " will happen in this Manga ? Lol
Oda never implied ZKK
The hero who died was Oden, the next hero is Joyboy (Luffy)
That's how it always has been
Luffu the hero who saves countries by beating the villain not Zoro!
Zoro has never killed nor beat a major villain and will never