We can't simply do our science and not worry about the ethical issues.
Document preparation systems will also require large screen displays.
And once an intelligent robot exists, it is only a small step to a robot species - to an intelligent robot that can make evolved copies of itself.
I think multiple levels of undo would be wonderful, too.
Take responsibility for the things you build and invent.
Interleaf is very nice. I expect there to be a lot of competition for programs like that.