I'm not entirely sure where to submit an idea to LTT but one comment that's made quite a lot is the "you cant go cooler than ambient." However there is a something called a peltier element cooler that from my limited understanding, through some witchcraft, they get cooler/hotter (depending on the polarity) which are usually attached to a heatsink of some form.
With a cool box, they draw air through the fins on the heatsink that are being cooled by the peltier element and thus, cools the coolbox down by 5 to 9 celsius below ambient.
What i would be interested in seeing is if there is a way for LTT to incorporate some form of these peltier elements where cold air passes the heatsink they attach to which cools where the heatsink or radiator would be drawing air from this cooler air and thus, getting lower than ambient. I would suspect this may be possible in a large case with a bottom chamber. I'm not sure but would be interesting to see if it would be possible to achieve lower than ambient result.