It would be an interesting backstory. But if you're using my franchise, you do it my way, or the highway. So there. LOL xD. Seriously, no humans. I don't want them there.
Ok, well the RP took place in primarily three places: Cape City, Eternity City, and Poseida Village. That was where the bulk of the story took place. However, there were other places in Valkaria that were also dealing with the Order of Neoverse at the same time. For example, Albia was mentioned numerous times in the first Odyssey. Right before the RP began, there was a large battle over Albia. In fact, the city was under constant siege for a good few months before it was finally taken. Could be an interesting story there about the defenders of that city. Also, Gold City was also still under the Alpha Alliance control, constantly fighting back wave after wave of Pokemon almost daily. If you recall at the end of the battle of Cape City, in the first Odyssey, the reinforcements that came and helped them out came from Gold City.
There's also plenty of other stories to be told. Smaller cities that were either successfully protected or eventually lost. Recall that the largest cities are Cape, Albia, Gold, and Eternity, but there are dozens of smaller cities around Valkaria, and hundreds , if not thousands, of small villages.