Tasks were about forcing players to do things that were meaningful to the world.
As for Thia's Holy Church, it was about subtly and continuously radiating positive emotions. Throughout history, the fact that religion could still exist from ancient times to the present proved that creatures, more or less, needed some faith.
Using the Holy Church to occupy the high ground of faith was always better for the world as a whole than anything else messy, such as a certain eager succubus's lustful church next to it.
Next, Renji would definitely not rely solely on players. The "NPCs" as natives could not be left behind. Continuing to strengthen military power and preparing for the cold wave a thousand years later, all this work was handed over to Nova.
Finally, the work on Earth's side, the connection with players, and the promotion of "Fallen Chronicles II" was Miyuki's job.
Rather...
Renji and Miyuki exchanged glances at the meeting.