[arbus]

This idea seems like it would be a much better fit for tablets rather than phones.

You have much more room to play around with on a tablet and perhaps the typical usage patterns of the tablet actually encourages you to swap out your bloks for different purposes.

For example, I could switch to a better but more power consuming Wi-Fi module when I'm at school which usually has crappy coverage but could then swap that out for longer duration battery so that I can watch shows on the train ride back home without compromising on screen brightness or risk the tablet dying before I get home