So much potential.
With Naruto and Sasuke nerfed and gone this is a good chance to show if the villages would remain united without them. Without the two people who are far stronger than everyone combined. Thus being a war deterrent. This is also a good chance to show how Sasuke will handle it.
When Shojoji was interrogated Sasuke mentioned underworld criminals know how far he will go in dealing with them. Which scared Shojoji into speaking. Later he told Boruto that the only one the village should hate is him. In response to hearing Kawaki tried to bear the burden of killing Boruto. Both statements are reminiscent of his revolution plan, but rather than become the force that kept the villages united, he intimidated criminals to keep them subdued. And the Kawaki statement shows he's still willing to be seen as a villian in order to maintain peace.
Now he's fled Konoha as a rogue shinobi. If conflict between the villages ensues I see him stepping in (akin to Madara man handling Mu & Onoki for Konoha) & given his & Boruto's power the Kage may set aside their differences to hunt them down. Once again proving how a common enemy unites them. Plus we'll see a new gen version of Madara (Sasuke) vs the 5 Kage.