Are you implying that a device is not a mechanical mod if it uses wires to pass the current rather than the body of the mod?
Because I can assure you that's still a mechanical connection. It still works exactly the same way, the ONLY difference is the shape of the conductor. Using wires rather than the body does NOT mean the device is no longer mechanical. As long as there are no added electronics then it's a mechanical device.
And I would even debate that adding electronics means a device is no longer mechanical. After all, before safe chemistry IMR
batteries we were all using Protected Li-ion
batteries which include a little electronics package that monitors and regulates the battery. That didn't make them non-mechanicals.
Personally, I've been kicking around the idea of making a pure carbon fiber mod a hollow tube to run a 14 gauge silver wire through. Connect the silver wire to a solid silver contact pin, use a solid silver contact pin on top, and make the 510 connector either silver plated copper or solid silver and you would have the lowest resistance mech mod on the market. And it would be the lightest and one of the strongest as well.