1. Make Spirit Bank only available in the Temple.
2. Start all Keeps at R6 at the beginning of a campaign
3. Start all Forts at R4 at the beginning of a campaign
4. Link immediately adjacent parcels to Keeps/Forts in terms of overall Rank.
5. Set all nodes/mobs in the Keep and linked parcels to R3-R6. Set all nodes/mobs in the Fort and linked parcels to R1-R4
6. Give us a mechanic to rank up the Forts/Keeps.
Maybe a sacrifice mechanic.
Maybe sacrifice shard