What?
The only systems that could possibly be said to "not work" are Bastion and/or Maldraxxus. Outside of those two both Ardenweald and Revendreth have systems that function properly. Ardenweald has problems because the flow of souls have been halted which does not mean the system is flawed. Revendreth on the other hand just has a corrupt leader which again has no implications to the system in place in revendreth being flawed.