Catching up was a very good thing for many of those that were teleported back to Genesis. But there were also those that were teleported to the Sigil continent. Many of the mages that went were to share knowledge or to start building more relationships with the angels.
In particular, there are some of the management positions from the guilds and the Genesis building going over. They would share the processes that had been created to manage all the races coming together.
This was going to be a revitalization of many things. The angels would be able to take the more developed processes for documenting their people, for setting up certain organizations, and even combining their laws. It would help them in many ways to unite their empires.