@DemonX:
This is actually some good news. I was wondering how he'll fit in everything to work in those 5 parts
Quite the opposite for me.
We know that Luffy will defeat Kaido in the end, alone or less so.
The 5-part structure, imo, allowed for a wider shock. What with Kaido wiping the floor with the Sulong minks and the Scabbards in part 3, and the SHs having to look for an alternative, and to knock Kaido out, in part 4 (with P5 being the party and Momo being declared Shogun alongside a regent).
But now, 2 parts short of whai I was expecting (and I stress the I because I know this to be entirely subjective), all the nuisances are gone, most of the shortcuts will be taken, and Kaido will fall without too much surprise. It's one thing to have an exotic recipe cooked based on impressions, an another to have an exotic recipe followed down to a T–they're both tasty, but the latter is way more memorable.
At the same time, I understand Oda's tiredness. Spending most of one's adult life writing the same story becomes tidiuous. But, however popular that story might be, it looses a lot of intrigue once the author shows he wants to reach the end regardless of the inconsistencies shown along the way. Even knowing that he wants to spend more time with his wife and daughter, I lose some respect for Oda because he knew what he was going into when he started writing this, though now he's no longer willing to deliver on that tacit promise.