I want it all! LOL!
Valve to let in the right amount of water, separating the grinding and brewing operations would allow for flushing.
Do nothing... and the coffee is there in the morning!
I’m a robot expert BTW, but don’t care to work anymore.
Keurig is an excelllent system for someone who doesn’t drink much coffee.
I have a keurig for a cup of decaf in the evening. I have a Nespresso Latissimo Pro for the morning latte. No measuring and love that I have no cleanup- twist a dial and then just put the milk froth container back in the fridge and go!