There are 2 directions that I'm assuming will happen. 1st, Kuma will arrive, sort of try to protect Bonney. This will create a build up of a losing situation. Then when things seems hopeless, Luffy will wake up and powerful Haki will knock down anyone below Vice Admiral. After that, we might see an inner world interaction between Luffy and Nika where Nika will offer Luffy to exert more of his power. Transformation and then Nika will awaken the ancient robots and release them to wreck havoc to the world government like the Rumbling in AoT. Second is, Kuma will not arrive but the rest of what I previously said will happen. Regardless, a global cataclysm will happen and the WG will execute an order to mobilize all their forces to hunt down Luffy in order to stop the actions of the ancient robots. This will serve as a catalyst to the final war between all major forces at the gate of Laugh Tale.