That can be done with Bitcoin today. Download a lightning capable wallet in the appstore of your choice and post an invoice, I can instantaneously pay that to your wallet with near zero fees.
> stable value
That is basically what I was saying earlier, we don't know the correct price yet. However bitcoin is only volatile upwards (if your time horizon is > 2 years)
Bitcoin is the perfect settlement base for layers built on top. The Lightning Network uses Bitcoin for its trustlessness and payments are also denominated in bitcoin.
I know that I sound like the typical Bitcoin-shill, but I really think that this is the one of the most important projects of our lifetime. It is the first shot at seperating money from power. Some of us just need to accept that we missed the early train and didn't get rich (we all would have sold at $200 if we bought at $0.30), but accept it for what it is. The first and only trustless, permissionless and decentralized monetary network.