Me, too, I feel kind of addicted actually. One change that I have noticed is that it must be about two decades since I last owned a washcloth. I wonder if they had been part of the customary hotel bathroom set back then or were they considered part of what the first would bring?
As a high-flow addict what I'd really love to have is a closed loop shower, because what I certainly don't need is drinking water quality the entire time. Use fresh water only at the beginning until the loop is filled (perhaps manually or automatically omitting recapture of the first few tens of seconds of the initial flow, for when you come in really dirty), then cycle for as long as you want, then again fresh water for a final rinse. Bonus points for a button to purge/refill mid-shower if you want it a bit cleaner.
I consider this concept one of those good things that is threatened by the perfect (expecting people to shower less or downgrade to mist-showers or washcloths)