I see fact spinning folks. Ok to address a few things:
1. Yes the original Goodman design was a very, very trouble prone design. I do not deny that. But to say it has anything to do with Speed Queen's longevity is stretching it. When Speed Queen took in that design absolutely everything that failed on the Goodman design was re-engineered. The seals, transmission, outer tub, ect. Having Speed Queens with this new design in commercial service all over the world for 15 plus years performing well have proven that that improvements were well made.
2. Go to any scrap yard. How many 2000s machines do you find? How many people will tell you about the dreaded bearing noise in front loads after 7 years of daily use? I'm sure some will last 20 years, even those from notorious groups, but as a whole more machines are hitting the scrap yard today at age 10 then decades ago at age 30. Sure even back then there were WCIs, GEs, and D&Ms that hit the scrap in only 5-10 years, but the most popular brands like Kenmore and Maytag were lasting 20 years average with ease.
3. Granted today's BOL GEs are not what they used to be, but they still have similar parts to the old Potscrubbers. They hold just as much detergent as the old machines, and the main wash cycle is an hour long with the heater running the whole time on the push-button models (checked the tech sheet), effectively mimicking the extended main wash found on the 80s-90s machines. Yes the passive filter is long gone, but the new round filter is not bad at all in my experience. Compared to not having one on the 90s BOLs, I will say its a God send. I used one in 2008-2009 before moving out, and I have to admit that after dropping 2 table spoons of coffee grounds in the machine- they were all gone after a full cycle from Hot-start. Would the same happen without the filter? I know it would not, tried it when I had the late 90s BOL and it was the dumbest thing I've done. Several cycles and they were still cropping up. We may differ in experience, but the new BOL GEs with the round filter rival, if not exceed, the mid 80s BOLs in terms of preventing food particals from re-depositing on the dishes. And last but not least, the push-button (step up from BOL) has a system where water is sent over the top rack and deflected off a diffuser on the tub ceiling:
http://www.homedepot.com/p/Hotpoint-Front-Control-Dishwasher-in-White-HDA3600HWW/205224534
For those following my posts, I am seriously considering getting one as a daily driver.
4. "Why is there a complaint if this will produce excellent cleaning results and is still much lower than what old KA's and GE's would use on even their normal cycles, which could be around 12 gallons, and 15+ gallons for heavy cycles? Why does a machine HAVE TO guzzle water just for the hell of it?"
The 80s Potscrubbers, at least the mid 80s versions, used only 11.4 gallons on the Heaviest cycle while getting things clean to spec in my experience.
I do not deny people are getting absolutely spotless dishes in the New Whirlpools. But my point is this: if you load a Whirlpool up dirty, its water use will not be 3-5 gallons. It will be closer to a Vintage machine. Would defaulting to 8 gallons be silly if you pre-rinse? Of course! But if I always load power clean dirty, both a new machine and an old machine will end up taking the about same amount of water.