As the ruler of Noxus, Kael would have been responsible for overseeing the governance of both Neo-Arcos and Kaeltopia. Even though the city centers were 10km apart, there was a crossover of about 1km of land between the two cities, which made it important for Kael to ensure that both cities were governed in a unified and cohesive manner.
In order to achieve this, Kael would have likely assigned specific roles to the council members to govern the city of Kaeltopia. For example, Jaxon, the expert in sustainable energy and infrastructure, would have been responsible for overseeing the development and maintenance of Kaeltopia's infrastructure and resources. Landon, the expert in public services and healthcare, would have been responsible for ensuring that the citizens of Kaeltopia had access to the services they needed to live healthy and fulfilling lives. Rhett, the expert in security and defense, would have been responsible for protecting Kaeltopia from external threats and maintaining order and stability.
In this way, Kael would have ensured that the governance of both Neo-Arcos and Kaeltopia was unified and cohesive, and that the needs of the citizens of both cities were met. This would have helped to promote a sense of unity and cooperation between the two cities and would have been beneficial for both Neo-Arcos and Kaeltopia's citizens.
With Xander's sudden departure from the council, it may have come as a surprise to the other council members. They knew that he was close to retirement, but they didn't expect him to leave so abruptly, without any noted reason. Some members may have suspected that he was struggling with personal issues or that he had found a new venture or opportunity, but without any information from Xander himself, it was hard for them to say for certain.
It's possible that the council members tried to reach out to Xander to find out why he left and where he had gone, but without any response, they came to the conclusion that he had taken his retirement early. They may have also discussed how to fill his position on the council, and how to ensure that the business community was still represented.
It's worth noting that Xander's sudden departure may have caused some disruption to the council's work, but they were able to adapt and continue to govern the city effectively and in the best interest of its citizens.