The problem with having a single button, even configurable, is that it's all-or-nothing, and I might want different things at different times.
But thanks so much for taking the first step!
If nothing else it is a fun platform to hack on. I'm currently hacking a toy OS for it, and the documentation for the SoC is fairly complete. I'd love an updated phone like this Jolly orange Jolla to hack on, but not at that price, and seems like it might be locked down.