Frankly for my roleplaying in Rheinland for example it doesn't matter at all if there are 40 CR/OC shooting each other in tau-37.
Idea that Canon has is obviously to "divide the universe" in some way. Keeping same playerdatabase for both servers and each would serve own part - so rheinland will for example exist only on one server.. if you try to go there on the other one you'll get connected over.
Yes it's probably hard to and there are obvious problems, so we'll see if it will be possible one day.
Igiss says: Martin, you give them a finger, they bite off your arm.