The real killer feature for writers (especially novelists) would be an OS that booted into Emacs and didn't offer any distractions whatsoever. The ironically named selfcontrolapp.com is probably the biggest tech thing to affect the literary scene in a long time...but as a developer I know how to disable the iptables rules in the Linux version. And I have no actual self-control.

It could be named "EmacsOS".

Then, someone could develop a laptop that only runs EmacsOS. I suggest calling it an "EmacsBook".