It would be interesting to see an OS in which audio and video streams were first class objects. Where the primary display was a video stream composited out of m

It would be interesting to see an OS in which audio and video streams were first class objects. Where the primary display was a video stream composited out of main memory from a render tree that was the core data structure and which treated memory as being made of tagged video and audio buffers ( some of which were infinite in length or were memory mapped from disk or network sources ). BeOS had some of this, but the core ideas have not been explored as fully as they might have been.