Look, I made something! My answer to the Python's dominance in medium pad hauling: The Transporter. As re-imagined by Zorgon Peterson, based on the Hauler. Yeah, I know, it's only a crayon tier line sketch of a blueprint made with paint.net, but I'm proud anyway, like a 6 year old scrawling his first stick people.
The Transporter is a heavy lifting workhorse medium freighter intended for delivery of goods to and from trade hubs to the outlying stations in system and the immediate neighborhood. The very heavy hull is reinforced to handle load in high gravity environments and the strong thrusters, while only allowing for relatively low velocities, are running cool and enable accurate maneuvering. The heavy hull also means the jump range is limited, but not reduced too much while laden and shield effectiveness is rather limited. The blueprint shows two medium hardpoints in the front and one large hardpoint center back for some level of defense. While having fewer slots, and thus versatility, than a Type-6 or Python, it has two size 7 slots for a functional 256 cargo capacity. I'd give it another size 5 for the shield generator and two smaller slots for utility but that's it. It's meant as a heavy duty hauler, which might work as a miner, if you skip the shield.
P.S. Thanks to the cool thrusters and not relying on shields much, it may make a good smuggler, too.

The Transporter is a heavy lifting workhorse medium freighter intended for delivery of goods to and from trade hubs to the outlying stations in system and the immediate neighborhood. The very heavy hull is reinforced to handle load in high gravity environments and the strong thrusters, while only allowing for relatively low velocities, are running cool and enable accurate maneuvering. The heavy hull also means the jump range is limited, but not reduced too much while laden and shield effectiveness is rather limited. The blueprint shows two medium hardpoints in the front and one large hardpoint center back for some level of defense. While having fewer slots, and thus versatility, than a Type-6 or Python, it has two size 7 slots for a functional 256 cargo capacity. I'd give it another size 5 for the shield generator and two smaller slots for utility but that's it. It's meant as a heavy duty hauler, which might work as a miner, if you skip the shield.
P.S. Thanks to the cool thrusters and not relying on shields much, it may make a good smuggler, too.