gianaameri -
I think you should consider acceptance of the idea that in a society where free-will is prevalent, individuals will persue passions which when reviewed could be perceived as attempted with reckless abandon. You have to be willing to allow Jill to accept the elements of responsibility she owns per the standards of our society and in this case the rebreather diving community. I understand you can't seem to accept Jill had a role in this tragic accident, but she did. She got out of bed, put on her pants, and a rebreather. Like many in this thread, I choose to believe Jill was aware of the risks presented by this methodology of diving as evidenced by attending a proper class. She had an obligation to herself, her friends, and her family to assure the machine was properly configured as a life-support apparatus commisurate with the activity and configuration specified by the manufacturer's design.
We all seem to agree the manufacturer provided a product easily capable of supporting her life for this dive. She appears to have failed her obligation to herself in several ways and let's not trivialize the fact she paid the price for it. While I believe the manufacturers do have an obligation to produce a reasonably safe product, nothing about the product in this case malfunctioned, or failed to work as designed even when hobbled by it's user. I think once you've made modifications to the unit be them intentional or not, the product is simply a collection of parts you've sourced from the tool shed (akin to your Franken-Meg).
We have to allow divers to be responsible for the dive, and consider that manufacturers are providing pathways to our little explorations. As has been stated Hollis has an opportunity to offer a safety notice, and Hollis has exactly the same opportunity as every other manufacturer. They have the opportunity to continuously improve and better the design of the products offered. To my knowledge, no one from Hollis has made any statement about unwillingness to make design changes.
If you want to dive without the diver assuming some risk or responsibility, I suggest you fluff the pillows on your couch and I'll send you some video links from my future dives. I believe the P2 to be a safe and economical machine to dive, it is my go-to machine and I have plenty of other gear including a backup rebreather from which to choose.