I'll answer some of your questions:

1. You asked about "adding a packet of coffee powder". If you're asking about coffee "powder" (i.e. either preground or instant), then you are not the target market. For coffee aficionados, there is a very short window of peak freshness, about 1-2 weeks post roast. This model works great for these coffee folks who care about this freshness. Note supermarket coffee is usually hopelessly stale by the time it is sold. 2. While the physical dash buttons may have been discontinued, the virtual ones (through your phone, the web, Alexa, etc.) are still heavily in use. My guess if they discontinued them is that they figured they can get just as much play from the virtual ones, especially through all the "smart home" devices they are pushing.