Hey Mal! Since you're the big cheese here I'll address this to you.
- I think it is important to distinguish push/pull factors for a transient Zoner community/commodity.
- As such I think that it is important to break the Zoners into two groups.
A) Zoners who are existing in an intentionally isolated zone whom would likely remain stationary either for extreme periods of time or indefinitely.
B) Zoners who are existing in space in true Zoner fashion but act in the role of the Zoner merchant class. The kind we see on Independent world freeports, for example.
'A' Zoners would live in Delta, Yukon, Theta and Tau-37
'B' Zoners would live in Omega 3, Bering, Kepler and so on.
Or, to distinguish, A are Borderworld Zoners. B are Independent world Zoners.
B Zoners seem to exist in regions which maintain a potential for commercial activity, serving as large scale truckstops along busy routes from which wares and services may be bartered.
I believe the B stations would be ideal consumption points for transitory Zoner passengers.
I believe that Gran Canaria would be an ideal production point for transitory Zoner passengers.
And vice versa.
As Jinx suggested "fresh" Zoners would likely migrate. I believe it's logical to assume that, given the current setup the Zoners have to deal with, Gran Canaria is the most realistic source of Zoner populations.
So.
Gran Canaria to "Indie" Freeports and back again.
That's a system which works in my mind.
Edit for Xoria: As a commodity dealing with Zoners I don't feel that it really works as a model to include the fringe Zoner bases. Their populations are rather small... A transport laden with 2500 people would clean Freeport 14 out five times over (citation needed).
This idea might be silly. Stupid silly actually. But if you were looking for something to move between Zoner bases it might be interesting to employ something as common as correspondance, packages, supplies and so on. Basically miscelanious freight earmarked to travel from Aunt Mabel in Yukon to Cousin Bernice in Tau-37 (You know how cold it gets out there and how much she loves my letters/sweaters/pie).
I imagine there's conceptual room for something as pedestrian as freight between distant relations within the Zoner community.