Triggered
Combo, I can tell you're triggered (yet again) by another member expressing his views on this site. When called out about it you behave for a few days to a few weeks, then it happens all over again.
I'd love to build some pro-types, but I'm involved with codes/standards along with power systems which in of itself is another world all on its own.
The green diaphragm Kitchen-Aid dishwasher valve (heck even the not so bad one I linked to) is on orders of magnitude better than a solenoid which runs throughout the whole cycle holding down a flapper which deforms and sometimes gets stuck partially open from seeds or debris. GE widened their drain ports on their post shaded pole pump bodies for this exact reason. Flapper mechanisms just suck. Holding half a gallon of water in the sump and pump body is asinine but guess what it actually happened...
A separate drain valve along with a washable fine filter would have been the way to go on those WH machines. There is nothing simple about what Westinghouse thought of by any stretch of the imagination.
Ovens without T stats. Fun mental exercise in thermal dynamics especially considering its been done in the past and still done in low cost Chinese ovens. Hint, PTC heaters help.
Combos that don't spin- its worth the idea if cost ever came about. US combos didn't have a real spin, and for decades some front loads didn't even spin between wash and rinse.
Heck, I could try a dryer that uses a vacuum pump to boil the water out of garments but its just to complex and expensive to peruse relative to tumble options.
I once built a box with 2 200 watt light bulbs and a shaded pole fan for drying shoes, sneakers and umbrellas. Guess what, it worked!