Forging Alliances
The more powerful Reign and the others became, the more difficult it was for them to find a suitable hunting ground since they needed to go further and further away from Doncaster. At first, they didn't think much of it, by constructing a portal, they could easily go to and from Doncaster, but the problem became bigger once they found out that after a certain distance, the cost of a portal became more expensive.
If Reign and the others had to continuously create portals, they would find themselves lacking money soon as even though they were getting an influx of people from the underground, most of them had never fought before and were below Tier I.
It would take months for them to become powerful enough to actually start helping the territory out in a significant way, not to mention the fact that most of them were not ready to fight against monsters.