New series of freighters, one per faction.
These would be supercapital freighters only able to be docked in large and x-large structures and banned in highsec.
They’d have ~10 freighters’ worth of cargo space, approximately the same ehp as a supercarrier, a +n/lvl warp scramble resistance, and possibly be able to fit a PANIC or a local active tank on par with a sieged dread or a rorq.
Maybe a drone bay restricted to combat drones or a single light fighter tube with enough fighter bay to prevent instant defanging.
The goal here is to create a big, semi-independent mover to go along with ore redistribution and encourage more gating of high value/volume cargo, escorting, and ganking by creating a tempting alternative to jump freighters.
Edit: Because it is now painfully obvious to me that the most important trait shouldn’t have been vaguely implied:
These ships would not have jumpdrives
They would only be able to gate around and have far too much mass to be titan bridged.