I 100% agree with you minus the complexity statement. The Power Clean was just to different than what the market and government wanted at face value. So production seized. 2013 was a dark year for me. You're correct that you can't get a residential standard tub anymore. A shame really, because standard tubs were easy to service and typically did not need to be pulled out of the cabinet. Which you mentioned.
The clean water wash system is compact and great for what it does but it will never hold a candle to the cleaning and food soil handling capabilities of a Whirlpool Power Clean Filter Module.
Manual clean filter are IMO the worst, and for me the most disappointing is their use in commercial dish-machines. Champion got it partially right in that their machines used a vertical reversing pump and motor that behaved similarly to a Power Clean but still not to the same level of soil processing.
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The above, but with a redesigned module and beefed up motor would be a dream. I've been contemplating on buying a low temperature dish machine to avoid the tall tub fiasco especially since modern dish machines be programed to start with an empty sump and drain said sump at the end of a cycle however the only thing holding me back are the manual clean strainer filters.
The simple push to start button would fulfill the BOL control requirements.