I'm under the impression that people are saying that ganking will be unlikely due to the dilution of the systems being colonised (true), while the activity will actually happen in the systems where the Trailblazer megaships will be deployed, since that is where the concentration will be, like a constant CG.
The more megaships, the better the dilution, but I suspect that even then, some will be more popular than others, based on their location.
Want to reduce the chances?
Get delivering for the current CG to get as many megaships as possible!