In my mentally-proposed ACNW '05 (presuming we make it this year) game "Brothers of the Empire" I've come up with a new (to me) concept for the Logrus that I quite like and figured I would share.
The Logrus is not a place. It is purely an initiation. There are sacred grounds for it, but its tendrils snake (if you excuse the word) throughout Shadow.
No one knows entirely what makes the initiation successful, although after countless years it has been made crystal clear that a certain fluidity of shape is required.
There are nodes of Logrus that the Houses of the Thelbane have used as anchors for their Ways. They are the sources of power for many of the more permanent installations of the Courts, although their shifting has caused wars and desolation, leading sometimes to even the changing of emperors.
Sometimes Things are born in the nodes, demons all. Demons, controllable by the power that birthed them, it is they who created Trump based on the True Name and True Image of all that rests in Shadow. It is they who crafted the Spikards, weaving the Images and Names of forgotten Powers into metal.
The Empire is an Old Empire. It has had many gods, many leaders...but only one Logrus.