The Zoners once had a light BS, before it became a true carrier (btw, is it any good?).
Now, Zoners having any large capital ships is often a highly flammable subject, but not all of us want to RP Corsairs, Core, Order, Houses, etc.
Considering where many Freeports are, the Colony Ship is ridiculously massive and unwieldy. Not to mention the amount of resources needed to construct and maintain the Nephilim. As far as this vessel goes, it would be better suited as a mobile colony, armed with only secondaries.
The Zoners should have access to a dedicated light BS. Either the current carrier model could be used, or some talented soul could create a completely new model. Ideally, it would have lower than average hull points, but a higher than average maneuverability.