I haven't used the MOLLE-USGI medium (external) frame rucksack since initial training. In fact, in 3 tours overseas, I've never seen anyone use it for missions. It sucks for comfort, speed, and mobility. By MOLLE, I meant, more specifically the PALS webbing that is used for attachment of components, since that is one of the problems he specifically mentioned. Most people don't know what 'PALS' means and generally think 'molle' is referring to the webbing (which it doesn't), as you pointed out.
Although, I felt like his 'floating daisy chain' idea would work, I figured it could only be for larger bags. If you had lot of little bags like a ditty bag (personal hygiene), stove bag, cooking utensils, fishing kit (since he canoes, I assume he fishes), etc. you would have to have a different system, like PALS.
I had read the StackPack website. I didn't comment on it because I don't have experience with it. It seems like a generally good idea, but didn't seem to fit Rick's wants. That is why the discussion seemed to continue, right?
I am quite aware that the Kifaru & Granite Gear system are heavy, I carried them. It seems that Rick is willing to make, and be creative with the design of a system. Rick also uses the term 'framesheet' and none of his concepts included an external frame. Which is why I mentioned Kifaru.
I think you are caught up on the idea that I basically said you were wrong and didn't try to look the thoughts I was trying to portray. I, in no way, meant to be offensive. I just feel that Rick's idea could easily work and didn't want him discouraged.
The Kifaru AG Platform Frame And Suspension
has a framesheet that I think (once removed from the heavy cordura) would only weigh in around 8-9 oz. It is also a full length, comfortable and load transferring, which the cut away camelbak is not. You might, now, be able to see how you could swap the cordura for cuben, the nylon webbing for grosgrain, and replace the waist and shoulder straps with mess to get a full attachment system for under 13-15 oz (that was my estimate). That is why I absolutely felt that their system should be discussed. Exact weights of Kifaru's components are unknown, since I couldn't find them online. The weight of that framesheet is only a guess (based on personal handling of it) on my part, but that is why I threw the idea out there.