So if I get this right..
Kaido went into dragon form, so the SNs could get feats against it.
Would he have stayed in human form, he would have probably speedblitz one shotted all of them bar Luffy.
And in dragon form Luffy solely uses non advCoA Boundman attacks, because that was so effective against him in Kuri already?
And even though a minute before all that happened he smashed his skull in with an inferior gear form, but superior haki?
Kaido's dragon form is a pure plot device.
Now with his hybrid form, we will get to see all out advHaki Luffy and all out Enma Zoro. - > the real fights.