The above panels seem to indicate something:
- Kaido and Big Mom are passively using immense amounts of haki on their bodies, negating certain DF abilities from affecting them
- Law can use this technique as well, albeit it takes him a significant amount of effort, whereas Kaido and BM could do this casually
Since Law is now able to use a haki technique similar to them, I think by elbaf, when we are likely to have a big battle with the blackbeard pirates or the marines, Law's haki will have advanced to a level to where he can casually and effortlessly coat his full body with DF-negating haki. Basically, I think Law will acquire Kaido and BM's tier of durability via haki mastery.
Elbaf will likely be the arc where the 3 captain's bounties will surpass 5 billion. For Law to do this, he needs to have some form of advanced haki. The panels from last chapter show the direction Oda wants to take Law's haki development. Rather than have him master ryuo(which he could still have), Law will master full body coating.
