This way it's Master > Slave Priority 1 > Slave Priority 2
For those that can spare it, they get the full blown canonical experience
This also means the Ruins reset from the gateway isn't so underwhelming, it can totally reset the world, minus the Atrium (as it appears to go back in time)
This also means mod support for Slaves with Priorities, e.g 3 for below ruins, -1 for above Master (Up and Away?)