Indeed, having full blown Linux on the phone would honestly be the ideal option. I'm honestly surprised that nobody tried building hardware around this idea. You could have a single device that acts like a phone, but then you could make it dockable and the dock could add more ram and a better GPU, so then you could use it like a desktop. So, you'd just carry a single device around with you all the time and use it in different modes as needed. This would also avoid the need for using a lot of online services, like the calendar, which sync data across devices. You'd just always have all your data in one place.

I figure I'll hold out and see if it becomes officially available. My phone still works fine for the most part, and if battery holds out there's nothing too wrong with it really.