GVW is not just about the frame and suspension, it also includes brakes and temperature control of everything (trans, rear end, engine). It's very hard to make a 1/4t truck into something bigger. This has been covered.
If they had designed around a 1ton cab/chassis Ford/Ram/GMC their work would be so much easier. Those platforms are now universally the same. Flat frames of the same width. Upfitter ready electrics. De-rated industrial engines and transmissions. Finished weight would be about 10K with 1500 lb headroom. Mileage would probably exceed the TC with 2x the range. When new models of C/C come out, there would be no need to completely re-design the camper.
I keep looking for storage on this TC. I only see the ski box at the rear. Also, the oven and full size wet bath take up so much room for only occasional use.
Compare this TC to the Earth Cruiser Terranova. Compare layout, storage, capability and price. The EC is about $25-50k more. But then, TC would be just another camper company. They definitely are in a unique niche market.