Well what I would watch is a video of Dave explaining the circuitry and function of the device... not a "bashing" of the purported usefulness or cost or cult/religion. We all know it's an expensive piece of crap that if there's any influence on a person at all, will be due to the placebo effect.... on people who are already indoctrinated in whatever they believe, and claim it has the desired effect on them.
But a purely objective electrical teardown analyzing what the device is actually measuring electrically (or outputting) and what the controls and readings actually mean would be interesting. Entirely electrical discussion. For example, by the quick look at the previously linked video I am seeing the needle goes up whenever you squeeze the handles, and I think he used a resistor decade box of some kind to test it further. Is it measuring any other property? Inductance, capacitance? Is it driving the signal at some AC frequency or purely DC? What would an oscilloscope and various other types of testing instruments show? At the end we would have a purely electrical scientific understanding of what is actually going on.
Dave wouldn't have to state the obvious... if you tell me the thing measures resistance across your chest (from your hand across one arm to the other hand) or some other electrical property, then fine. The cult will have you believe it means something more than just resistance and that you should do such and such a thing.... Dave could have a field day calling this out for the BS that it is, but at the end of the day he won't convince those who have "bought in", and may attract some lawyers letters. A purely electrical review may be a way to avoid legal threats and still learn something. By the way, you wonder if they just repurposed components from some other test equipment and used them in a different housing, or if most of the circuitry and other stuff in there's does nothing and is there for "show". I can't believe they would do an entire production line for something like this, although that also could explain the high cost.
By the way I've attached a photo from an eBay item being sold now (just search for Scientology equipment). It clearly states in RED that it is all BS... only used for "religious purposes" whatever that means. There is also an Australian patent number on there, US patent numbers and UK patent numbers. I'm sure we can dig up the patents which may explain the electrical function....
OK here we have it:
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=0264,877.PN.+4,459,995.PN.&OS=PN/0264,877+OR+PN/4,459,995&RS=PN/0264,877+OR+PN/4,459,995And I've attached the patent PDF as well. There is also a ton of information and even more patent numbers and links on the Wikipedia article on the E-meter (which seems to be some derivative of a dubious pseudo-scientific Keeler lie-detector test, and may have been used as a "screening" tool for potential indoctrinates of the cult to see if their intentions were true during the interview process):
https://en.wikipedia.org/wiki/E-meterGiven the amount of stuff we already have seen about this, I understand why Dave would not bother wasting his precious time reviewing the device. Reading up the patents, Scientology's own RED disclaimer sticker and the rest pretty much sum up the entire turd-box.