In my opinion, Kusari needs more work than most of the other houses. Or perhaps thats just coming from a Kusari person.
Rheinland... Meh. I have an MND and thats it. I don't often find things to do - except annoy das wilde, which I did on my order. But yet every second day I can see raids by the RHA, wilde, etc.
Those things happen once per 1-2 months in kusari.