I wonder if you can hook it up to a monitor and use it like macOS. That would be the killer phone and killer laptop, then you just need to connect a mouse in and display or tv and work wherever. But I doubt Apple will ever do that, I don’t think they are bold enough to cannibalize their laptops.
Imagine being able to hook up a small slab to a keyboard or mouse Bluetooth then connect to a monitor, tablet or hotel tv, like the Samsung Dex can do. And run full laptop/desktop applications. One can dream