Actually my thoughts were along these lines. Imagine taking two Kabuki tanks and placing them side by side. Then remove half of one tank and it's innards and make it a reservoir and mold the two into an oblong shape that fits on top of the Radius. No additional height to screw with wicking and alot more juice capacity. It would probably have to be all metal, or maybe with a small crystal view port if the designer felt like adding in the complications. Would basically just be a wider version of a standard Kabuki specifically made for the Radius.