Rather than risk a war talking about how bad some current operating systems are, I am going to propose some of the older ideas here (some with a modern twist) and where I am taking them from. I will also give you pointers to some of the systems I am speaking about and where you can learn more about them.
I think as you do more and more research you will be shocked by how much has already been learned and DONE in this field, and how little is used today.