Sorb doesnt need to stay that dry to basically work. Free water basically runs through it as its pretty much just crushed rockWho makes the longer scrubber that fits the classics?
I also am not sure if drilling the bottom would be more effective, it would put the trap after the scrubber meaning it'll get the sorb wet. I know some other units are set up somewhat like this, but they usually have the counterlung down there too such as the sf2. It also wouldn't really reduce the need for the case.