It's not even clear to what extent you'd have to rewrite.
3D X-Point memory is coming. This is about 10x slower than DRAM but persistent and at a fraction of the cost. At 10x slower you can integrate it into NUMA systems and treat it as basically the same as RAM. One of the first features prototyped with it is "run a JVM with the heap made entirely persistent".
I agree that there's a lot of scope for innovation in desktop operating systems but it probably won't come from UI design or UI paradigms at this point. To justify a new OS would require a radical step forward in the underlying technology we use to build OS' themselves.
3D X-Point memory is coming. This is about 10x slower than DRAM but persistent and at a fraction of the cost. At 10x slower you can integrate it into NUMA systems and treat it as basically the same as RAM. One of the first features prototyped with it is "run a JVM with the heap made entirely persistent".
I agree that there's a lot of scope for innovation in desktop operating systems but it probably won't come from UI design or UI paradigms at this point. To justify a new OS would require a radical step forward in the underlying technology we use to build OS' themselves.