Talking to Riehl and also reading some of the comments, I came to an agreement that it is true is a bit "overqualified" for a Gunboat. Riehl and I decided to give it another approach as a Salvager type Transport, just like the Salvager in-game. Arms, mini hangar, and a docked boom arm. With this, it sacrifices one turret slot. Keeping its oversized engines, the Central Cylinder, can't miss it, will act as cargo storage instead of a reactor.
"But spheres and Cylinders are meant for gas products." Not true. There are spheres and cylindrical shaped storages in the Sci-Fi universe. In Example, the Lucrehulk, Star Wars Trade Federation Battleship.
Anyways, here are the results. It is subject to change.
I'm quite partial to the goose currently because it's more visually distinct compared to the Oder, but this one is prettier and an objectively better model in terms of polys.
THE SYNDIC LEAGUES
(A co-operative of Rheinland's Shipping Unions, retired from a life of piracy.)
I like that model. It has the same rheinland aesthetic but in a more blocky and utilitarian style that seems fitting to the unioners and their lore background.