I can't see how going hub less would work. You'd have to configure all the devices to connect to a hotspot on your phone and get your phone to reliably create a

I can't see how going hub less would work. You'd have to configure all the devices to connect to a hotspot on your phone and get your phone to reliably create a wifi network every time you get home. Dealing with multiple users would be a massive headache. You could have a home wifi network which doesn't connect to the internet. Wifi routers are dirt cheap and don't need to be connected to the internet. That said, the logistics of this would be super weird because smartphones are mostly designed to treat connected wifi as their internet source. Also, if your devices don't have at least an indirect internet connection you can't do anything remotely which is a pretty big functionality hole.